can someone help me solve -2√180u²v

Answers

Answer 1

Answer:-12 with the weird checkmark symbol then a five inside the checkmark symbol times u squared v

Step-by-step explanation:


Related Questions

A gardening club records the number of new plants each member planted in a

month. Create a histogram to show the data distribution for the number of new

plants. Show your work.

2

6

8

10

New Plants This Month
.

12
.

14

16

Answers

A histogram of the data distribution for the number of new plants is shown in the image below.

How to create a histogram to show the data distribution?

In this scenario and exercise, you are required to create a histogram to show the data distribution with respect to the number of new plants. First of all, we would determine the midpoint, absolute frequency, relative frequency, and cumulative frequency;

Midpoint                                      Absolute frequency      Rel. frequency

[0, 2] = (0 + 2)/2 = 1                        3 + 2 = 5                        0.128205

[2, 4] = (2 + 4)/2 = 3                        2 + 3 = 5                        0.128205

[4, 6] = (4 + 6)/2 = 5                        2 + 3 = 5                        0.128205

[6, 8] = (6 + 8)/2 = 7                                    2                        0.051282

[8, 10] = (8 + 10)/2 = 9                     3 + 4 = 7                        0.179487

[10, 12] = (10 + 12)/2 = 11                  4 + 3 = 7                        0.179487

[12, 14] = (12 + 14)/2 = 13                  1 + 2 = 3                        0.076923

[14, 16] = (14 + 16)/2 = 15                  3 + 2 = 5                        0.128205

Mathematically, the relative frequency of a data set can be calculated by using this formula:

Relative frequency = absolute frequency/total frequency × 100

Relative frequency = 5/39 × 100 = 0.128205

For the cumulative frequency, we have:

0.128205

0.128205 + 0.128205 = 0.25641

0.25641 + 0.128205 = 0.384615

0.384615 + 0.051282 = 0.435897

0.435897 + 0.179487 = 0.615385

0.615385 + 0.179487 = 0.794872

0.794872 + 0.076923 = 0.871795

0.871795 + 0.128205 = 1

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Find the particular solution for: 1 f"(x) = 0.25 x 7, = f'(4) = = and f(0) = 2. 8

Answers

Particular solution is: f(x) = (0.25/24) x⁹ - 6553.3333 x + 2

How to find the particular solution for the given differential equation?

We need to integrate it twice. Integrating once gives us:

f'(x) = (0.25/3) x⁸ + C1

where C1 is the constant of integration. Using the initial condition f'(4) = 8, we can solve for C1:

8 = (0.25/3) 4⁸ + C1
C1 = 8 - (0.25/3) 4⁸
C1 = -6553.3333

Integrating again gives us:

f(x) = (0.25/24) x⁹ + C1 x + C2

where C2 is another constant of integration. Using the initial condition f(0) = 2, we can solve for C2:

2 = (0.25/24) 0⁹ + C1 0 + C2
C2 = 2

So the particular solution is:

f(x) = (0.25/24) x⁹ - 6553.3333 x + 2

Note that we did not need to use the second initial condition, f'(4) = 8, to find the particular solution. This is because it was already used to find the constant of integration C1.

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What is the percent change in carbon dioxide in the atmosphere between 2015 and 2019?
a. 6%
b. 3%
c. 1%
d. 12%

Answers

The percent change in carbon dioxide in the atmosphere between 2015 and 2019 is 3 %

the percent change in carbon dioxide According to a WMO report in 2019 greenhouse gas concentrations, it was discovered that carbon dioxide growth rates were nearly 20% higher than the previous five years and that the percentage increase from 2015 and 2019 was approximately 2.88%. which is approximately 3 %.

carbon dioxide in the atmosphere in 2015 = 399 parts per million

carbon dioxide in the atmosphere in 2019 = 410.5 parts per million

Percentage change can be calculate by using

% change = [tex]\frac{Final - initial }{initial}[/tex] × 100

% change = [tex]\frac{410.5 - 399}{399} \[/tex] × 100

% change = 2.88 %

Hence, the percent change in carbon dioxide in the atmosphere between 2015 and 2019 is 3%

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The correct answer is b. 3%.

To answer this question, we need to compare the concentration of carbon dioxide in the atmosphere between 2015 and 2019. The concentration of carbon dioxide is measured in parts per million (ppm). In 2015, the concentration of carbon dioxide in the atmosphere was around 400 ppm, while in 2019, it was around 414 ppm.

To calculate the percent change between these two years,

Percent Change = [(New Value - Old Value) / Old Value] x 100%

Percent Change = [(414 - 400) / 400] x 100%

Percent Change = 3.5%

Therefore, the correct answer is b. 3%.

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X is 6 more than twice the value of Y and other equation is 1/2x+3=y what is the solution to puzzle

Answers

Let’s solve this system of equations. From the first equation, we have x = 6 + 2y. Substituting this into the second equation, we get 1/2(6 + 2y) + 3 = y. Solving for y, we get y = -6. Substituting this value of y into the first equation, we get x = 6 + 2(-6) = -6. So the solution to the system of equations is (x,y) = (-6,-6).

H 고 Assignment Law of Cosli Progress saved Submit and End Assignment Law of Cosines 5 points possible 0/5 answered 6 VO : Question 1 > 1 pt 1 Details A pilot flies in a straight path for 1 hour 45 minutes. She then makes a course correction, heading 35 degrees to the right of her original course, and flies 2 hours 15 minutes in the new direction. If she maintains a constant speed of 235 mi/h, how far is she from her starting position? Give your answer to the nearest mile. She is miles from her starting position

Answers

Round the answer to the nearest mile: She is 398 miles from her starting position.

To solve this problem, we'll use the Law of Cosines.

Here are the steps to find the distance from the starting position:

1. Convert the given time to hours: 1 hour 45 minutes = 1.75 hours 2 hours 15 minutes = 2.25 hours

2. Calculate the distance traveled in each direction:

Distance1 = Speed × Time1 = 235 mi/h × 1.75 h = 411.25 miles

Distance2 = Speed × Time2 = 235 mi/h × 2.25 h = 528.75 miles

3. Use the Law of Cosines to find the distance between the starting position and her final position:

Distance = √(Distance1² + Distance2² - 2 × Distance1 × Distance2 × cos(35°))

4. Plug in the values and solve for the distance:

Distance = √(411.25² + 528.75² - 2 × 411.25 × 528.75 × cos(35°))

Distance ≈ 397.69 miles

5. Round the answer to the nearest mile: She is 398 miles from her starting position.

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Select ALL the correct answers. Richard is renting a bike. The cost of renting a bike for the first hour is $7. He is charged $2.50 for every additional hour of renting the bike. Select all the functions that can be used to find the total amount that Richard is charged, f(n), for renting the bike for n hours. f ⁡ ( n ) = 2.5 ⁢ n + 7 f ⁡ ( n ) = 2.5 ⁢ n + 4.5 f ⁡ ( 1 ) = 7 ; f ⁡ ( n ) = f ⁡ ( n − 1 ) + 2.5 , for n ≥ 2 f ⁡ ( n ) = 4.5 ⁢ n + 2.5 f ⁡ ( 1 ) = 2.5 ; f ⁡ ( n ) = f ⁡ ( n − 1 ) + 7 , for n ≥ 2

Answers

The function that can be used to find the total amount is f(n) = 7 + (n - 1) * 2.5

Selecting the functions that can be used to find the total amount

From the question, we have the following parameters that can be used in our computation:

The cost of renting a bike for the first hour is $7. He is charged $2.50 for every additional hour of renting the bike.

This means that

f(n) = First hour + (n - 1) * Additional hour

Substitute the known values in the above equation, so, we have the following representation

f(n) = 7 + (n - 1) * 2.5

Hence, the function that can be used to find the total amount is f(n) = 7 + (n - 1) * 2.5

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Kendrick wants to build a slide for his sons. The height of the stairs is 5 feet. The base of the slide will be 6 feet from the bottom of the stairs. If he wants to build two slides so that each of his sons has their own, how many feet of plastic will he need? Round to the nearest tenth.

Answers

Answer:

Step-by-step explanation:

5^2 + x^2 = 8^2

25 + x^2 = 64

x = 6.2

Please solve, I rate! :)
Given f(t, y) = – 22 – 4cy3 + 3y5, find 2. - f1(,y) fy(x, y) = = frz(, y) = fry(x, y) =

Answers

The critical points are (t, y) = (t, 0) and (t, -4c/5).

To find the partial derivatives, we need to differentiate f(t, y) with respect to each variable separately.

f1(t, y) = ∂f/∂t = 0 (since there is no t term in the function)

fy(t, y) = ∂f/∂y = -12cy^3 + 15y^4

fz(t, y) = ∂^2f/∂t∂z = 0 (since there is no z term in the function)

fy(t, y) = ∂^2f/∂y∂z = 0 (since there is no z term in the function)

So, 2. - f1(,y) fy(x, y) = = frz(, y) = fry(x, y) = 0 - 12cy^3 + 15y^4 = 0  (since f1(,y) and frz(, y) and fry(x, y) are all 0)

Therefore, -12cy^3 + 15y^4 = 0

Factor out y^3:

y^3(-12c + 15y) = 0

This gives us two solutions: y = 0 or -4c/5.

So, the critical points are (t, y) = (t, 0) and (t, -4c/5).

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Solve for q q : 30 + q = 43 30+q=43

Answers

The solution to the equation 30 + q = 43 is q = 13.

What is the value of q?

Given the equation in the question:

30 + q = 43

To determine the value of q in the equation 30 + q = 43, isolate q on one side of the equation by performing the same operation on both sides of the equation.

30 + q = 43

q + 30 = 43

Next, we can isolate q by subtracting 30 from both sides of the equation:

q + 30 - 30 = 43 - 30

q = 43 - 30

Subtract 30 from 43

q = 13

Therefore, the value of q is 13.

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A rectangle with length n is inscribed in a circle of radius 9. Find an expression for the area of the rectangle in terms of n

Answers

Using pythagorean theorem the area of the rectangle in terms of n is given by A = n√(324 - n^2).

In the given scenario, we have a circle with a diameter that is twice the length of the radius, which is stated as 18. The diagonal of the rectangle is also the diameter of the circle, so it measures 18. Let's assume the width of the rectangle as 'w'. By applying the Pythagorean theorem, we can establish the following relationship:[tex]n^2 + w^2 = 18^2[/tex] = 324, where 'n' represents the length of the rectangle.

To solve for 'w', we rearrange the equation: [tex]w^2 = 324 - n^2.[/tex] This equation allows us to calculate the width 'w' of the rectangle when we know the length 'n'.

The area of the rectangle, denoted as 'A', is given by the formula A = nw, where 'n' is the length and 'w' is the width of the rectangle. By substituting the expression for w^2, we obtain: A =[tex]n\sqrt(324 - n^2).[/tex]

This equation represents the relationship between the length 'n' and the area 'A' of the rectangle, taking into account the given information about the diameter of the circle, which is also the diagonal of the rectangle. By solving for 'n' and substituting it into the formula, we can determine the area of the rectangle.

Let the width of the rectangle be w, then by the Pythagorean theorem, we have:

[tex]n^2 + w^2 = 18^2[/tex] = 324

Solving for w, we get: [tex]w^2 = 324 - n^2[/tex]

The area of the rectangle is given by:

A = nw

Substituting the expression for w^2, we get:

A =[tex]n\sqrt(324 - n^2)[/tex]

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Suppose $40,000 is deposited into an account paying 2. 5% interest, compounded continuously.



How much money is in the account after eight years if no withdrawals or additional deposits are made?

Answers

The formula for calculating the amount of money in an account with continuous compounding is:

[tex]A = Pe^{(rt)}[/tex]

where A is the amount of money in the account, P is the principal (initial deposit), e is the mathematical constant e (approximately equal to 2.71828), r is the interest rate (expressed as a decimal), and t is the time (in years).

Plugging in the given values, we get:

A =[tex]40000 * e^{(0.025 * 8)[/tex]

Using a calculator, we find that [tex]e^{(0.025 * 8)[/tex] is approximately 1.2214, so:

A = 40000 * 1.2214 = $48,856.12

Therefore, the amount of money in the account after eight years with continuous compounding is $48,856.12.

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HELP - A strip of uniform width is plowed along all four sides of a 12-km by 9-km rectangular cornfield. How wide is the plowed strip of the cornfield is half plowed?

Answers

Answer:

Let's start by drawing a diagram of the cornfield with the plowed strip around it:

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_____________________________

|                             |

|                             |

|                             |

|                             |

|        _____________________|__

|       |                       |

|       |                       |

|       |                       |

|       |                       |

|_______|_______________________|

The plowed strip has a uniform width, which we'll call w. We want to find w such that half of the cornfield is plowed.

The total area of the cornfield is:

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12 km x 9 km = 108 km^2

If we plow a strip of width w around the cornfield, the new dimensions of the cornfield will be:

scss

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(12 + 2w) km x (9 + 2w) km

The area of the plowed strip is the difference between the area of the new cornfield and the area of the original cornfield:

scss

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(12 + 2w)(9 + 2w) - 12(9) = 108 + 42w + 4w^2

We want half of the cornfield to be plowed, so we set the area of the plowed strip equal to half the area of the original cornfield:

scss

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108 + 42w + 4w^2 = (1/2)(108)

Simplifying, we get:

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4w^2 + 42w - 54 = 0

We can solve this quadratic equation using the quadratic formula:

css

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w = (-b ± sqrt(b^2 - 4ac)) / 2a

Where a = 4, b = 42, and c = -54. Substituting these values, we get:

scss

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w = (-42 ± sqrt(42^2 - 4(4)(-54))) / 8

arduino

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w = (-42 ± sqrt(1936)) / 8

makefile

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w = (-42 ± 44) / 8

So we have two possible solutions:

makefile

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w = 1/2 km (discarded since it does not satisfy the given condition)

or

makefile

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w = 11/2 km

Therefore, the width of the plowed strip is 11/2 km = 5.5 km if half of the cornfield is plowed.

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It takes Fena Tailoring 3 hr of cutting and 6 hr of sewing to make a tiered silk organza bridal dress. It takes 6 hr of cutting and 3 hr of sewing to make a lace sheath bridal dress. The shop has at most 30 hr per week available for cutting and at most 33 hr per week for sewing. The profit is ?$330 on an organza dress and ?$190 on a lace dress. How many of each kind of bridal dress should be made each week in order to maximize? profit? What is the maximum? profit?

Answers

Answer :The maximum profit is $1,650 when making 5 organza dresses and no lace dresses per week.

Explanation:

Let x represent the number of organza dresses, and y represent the number of lace dresses.

The time constraint for cutting:
3x + 6y ≤ 30

The time constraint for sewing:
6x + 3y ≤ 33

The profit function to maximize is:
P(x, y) = 330x + 190y

Using these constraints,
3x + 6y ≤ 30
6x + 3y ≤ 33
x ≥ 0
y ≥ 0

Optimal solution:

The corner points of the feasible region are (0,0), (0,5), (3,3), and (5,0). Calculate the profit for each point:

P(0,0) = 0
P(0,5) = 950
P(3,3) = 1,320
P(5,0) = 1,650

The maximum profit is $1,650 when making 5 organza dresses and no lace dresses per week.

Kelsey's favorite crackers are available in two different sizes. Which coupon should Kelsey use to pay the lower price per ounce for the crackers?

Answers

Using the coupon that offers a $0.50 discount on the larger package would yield the lowest price per ounce at $0.1875. Kelsey should use this coupon to get the best value for her favorite crackers.

Kelsey has two options when it comes to purchasing her favorite crackers, and she needs to determine which coupon will result in the lowest price per ounce. To make an informed decision, Kelsey should compare the price per ounce of both cracker sizes and apply the appropriate coupon accordingly.

First, Kelsey should find the price per ounce for each size by dividing the total price of the package by the total number of ounces in the package. For example, if the smaller package costs $2.00 and contains 8 ounces of crackers, the price per ounce would be $2.00 / 8 = $0.25 per ounce. Similarly, if the larger package costs $3.50 and contains 16 ounces, the price per ounce would be $3.50 / 16 = $0.21875 per ounce.

Next, Kelsey should determine the discount offered by each coupon and calculate the new price per ounce after applying the respective coupon. For instance, if one coupon provides a 10% discount on the smaller package, the new price per ounce would be $0.25 * (1 - 0.1) = $0.225 per ounce. If another coupon offers a $0.50 discount on the larger package, the new price per ounce would be ($3.50 - $0.50) / 16 = $0.1875 per ounce.

Finally, Kelsey should compare the adjusted price per ounce for both packages and select the coupon that results in the lowest price per ounce. In this example, using the coupon that offers a $0.50 discount on the larger package would yield the lowest price per ounce at $0.1875. Therefore, Kelsey should use this coupon to get the best value for her favorite crackers.

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The relative growth rate of a biomass at time t, R, is related to the concentration of a
substrate s at time t by the equation.
R(s) = cs / k+s
where c and k are positive constants.
What is the relative growth rate of the biomass if there is no substrate present?

Answers

If there is no substrate present, the concentration of s would be 0.  The relative growth rate of biomass at time t, R, is related to the concentration of a substrate s at time t by the equation R(s) = cs / (k+s), where c and k are positive constants.

To find the relative growth rate of the biomass if there is no substrate present, we need to set the concentration of the substrate, s, to 0. Using the given equation, we can substitute 0 for s:

R(0) = c(0) / k + 0

R(0) = 0 / k

R(0) = 0

Therefore, the relative growth rate of the biomass would be 0 if there is no substrate present.
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Find the volume of the cone with a height and radius both of 7.

Answers

The volume of the cone with a height and radius both of 7 units is 359.24 cubic units.

How to calculate the volume of a cone?

In Mathematics and Geometry, the volume of a cone can be determined by using this formula:

V = 1/3 × πr²h

Where:

V represent the volume of a cone.h represents the height.r represents the radius.

By substituting the given parameters into the formula for the volume of a cone, we have the following;

Volume of cone, V = 1/3 × 3.142 × 7² × 7

Volume of cone, V = 1/3 × 3.142 × 49 × 7

Volume of cone, V = 359.24 cubic units.

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Answer:

343/3

Proof of answer is in the image, please give brainliest

What is the average rate if change over the domain -1

Answers

I'm sorry, but the domain of a function is usually specified as an interval or range of values, rather than a single point. To calculate the average rate of change of a function over a given domain, we need to know the function itself and the endpoints of the domain.

If you provide me with more details about the function and the domain, I can help you calculate the average rate of change.

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Reina’s greenhouse is shaped like a square pyramid with four congruent equilateral triangles for its sides. All of the edges are 6 feet long. What is the total surface area of the greenhouse including the floor? Round your answer to the nearest hundredth.

____ft2

Answers

With all of the edges 6 feet long, the total surface area of the greenhouse including the floor is approximately 98.39 ft².

To find the total surface area of Reina's greenhouse, we'll need to calculate the area of the equilateral triangular sides and the square base.

1. Equilateral triangular sides:
There are four congruent equilateral triangles with edges of 6 feet each. To find the area of one triangle, we can use the formula A = (s² * √3) / 4, where A is the area and s is the side length.

A = (6² * √3) / 4 = (36 * √3) / 4 = 9√3 square feet

Since there are four triangles, the total area of the triangular sides is 4 * 9√3 = 36√3 square feet.

2. Square base:
The base is a square with side lengths of 6 feet. To find the area, we can use the formula A = s².

A = 6² = 36 square feet

Now, let's add the area of the triangular sides and the square base

Total surface area = 36√3 + 36 ≈ 98.39 ft² (rounded to the nearest hundredth)

So, the total surface area of the greenhouse including the floor is approximately 98.39 ft².

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Can someone PLEASE help me ASAP? It’s due today!! I will give brainliest if it’s done and correct.

Answers

The number of different sandwiches that can be created with two different meats is D. 6.

How to find the number of sandwiches ?

The number of different sandwiches that can be created with two different meats can be found by using the combination formula: nCr = n! / r!(n-r)!

In this case, we have 4 options for the first meat and 3 options for the second meat (since we cannot repeat the first meat). Therefore, the number of different sandwiches is:

4C2 = 4! / 2!(4-2)! = 6

So there are 6 different sandwiches that can be created with two different meats.

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(1 point) Consider the power series 00 Σ (-4)" -(x + 6)". n=1 Vn Find the radius of convergence R. If it is infinite, type "infinity" or "inf", Answer: R= What is the interval of convergence? Answer

Answers

The radius of convergence R is 1/4 and the interval of convergence is (-6.25, -5.75) for the power series

∑((-4[tex])^n[/tex]) * (-(x + 6[tex])^n[/tex]) / sqrt(n)
To find the radius of convergence (R) and interval of convergence for the power series ∑((-4[tex])^n[/tex]) * (-(x + 6[tex])^n[/tex]) / sqrt(n)

where n starts from 1 to infinity,

We can use the Ratio Test.
Step 1: Apply the Ratio Test
We want to find the limit as n approaches infinity of the absolute value of the (n+1)th term divided by the nth term:
lim (n→∞) |((-4[tex])^{(n+1)[/tex] * (-(x + 6)^(n+1)) / sqrt(n+1)) / ([tex](-4)^n[/tex] * (-(x + 6[tex])^n[/tex]) / sqrt(n))|
Step 2: Simplify the expression
The limit simplifies to:
lim (n→∞) |((-4)(x + 6))/sqrt((n+1)/n)|
Step 3: Find when the limit is less than 1
For the series to converge, the limit must be less than 1:
|(-4)(x + 6)| / sqrt((n+1)/n) < 1
As n approaches infinity, (n+1)/n approaches 1, so the expression simplifies to:
|-4(x + 6)| < 1
Step 4: Determine the radius of convergence (R)
Divide both sides by 4:
|-(x + 6)| < 1/4
The radius of convergence, R, is 1/4.
Step 5: Determine the interval of convergence
To find the interval of convergence, solve for x:
-1/4 < (x + 6) < 1/4
-1/4 - 6 < x < 1/4 - 6
-6.25 < x < -5.75
Thus, the interval of convergence is (-6.25, -5.75).
In summary, the radius of convergence R is 1/4 and the interval of convergence is (-6.25, -5.75).

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Sandra Waterman purchased a 52-week, $2,800 T-bill issued by the U.S. Treasury. The purchase price was $2,791.
a. What is the amount of the discount?
b. What is the amount Ms. Waterman will receive when the T-bill matures?
c. What is the current yield for the 52-week T-bill at the time of purchase?
Note: Enter your answer as a percent rounded to 2 decimal places.

Answers

(a) Discount amount is $6. (b) Maturity value is $2,200. (c) Current yield is 0.27%.

Here, we have,

A discount is a reduction in the regular selling price of a good or service, either in terms of money or as a percentage.

A product may, for instance, be discounted by $10 from its list price or by 10% from its list price. A sales discount is a lower price that a company offers on a good or service.

Find out how to add discounts to invoices. A sales discount, usually referred to simply as a "discount," offers clients of a business a lower price on one or more of the goods or services being provided.

(a) Discount amount

= Maturity (face) value - Purchase price

=$2,200 - $2,194

=$6

(b) Maturity value

=Face value

=$2,200

(c) Current yield

=Discount amount / Purchase price

=$6 / $2,194

=0.0027, or 0.27%

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The area of a triangle is (27 + 13sqrt(2)) square feet. if the length of the base is (6 + sqrt(2)) feet, find the height of the triangle in simplest radical form.

Answers

If The area of a triangle is (27 + 13sqrt(2)) square feet. if the length of the base is (6 + sqrt(2)) feet, then the triangle's height is (27 - 13sqrt(2)) / 17 feet.

We are given the area A and the length of the base b. We can use this information to solve for the height h as follows:

A = (1/2)bh

2A = bh

h = (2A)/b

Substituting the given values, we get:

h = (2(27 + 13sqrt(2))) / (6 + sqrt(2))

We can simplify this expression by rationalizing the denominator as follows:

h = [(2(27 + 13sqrt(2))) / (6 + sqrt(2))] * [(6 - sqrt(2))/(6 - sqrt(2))]

h = [(54 - 26sqrt(2)) / (34)]

h = (27 - 13sqrt(2)) / 17

Therefore, the triangle's height is (27 - 13sqrt(2)) / 17 feet.

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Five years ago, a county lottery official conducted a very extensive (and expensive) study to determine the average age of lottery players in the county. From the data, he estimated the true age to be about 50 years. Five years later, the lottery official wants to know if the average age is now different from 50 years. He plans to conduct a smaller (and less expensive) survey of lottery players. From a random sample of 81 players from the county, the average age is 48. 7 years with a standard deviation of 8. 5 years.


(a) is there convincing evidence at the a = 0. 05 significance level that the present-day average age of all lottery players in the county is different from 50 years.


(b) Referring to your conclusion in part fa), what type of error may have been made? Describe the error in the context of this study

Answers

a. There is insufficient evidence to conclude that the average age of all lottery players in the county is different from 50 years at the 5% significance level.

b. Referring to the conclusion in part (a), the type of error that may have been made is a type II error, where we fail to reject a false null hypothesis.

(a) To test if the present-day average age of all lottery players in the county is different from 50 years, we can use a one-sample t-test with the null hypothesis:

H0: μ = 50

And the alternative hypothesis:

Ha: μ ≠ 50

Where μ is the population mean age of lottery players.

We have a sample size of n = 81, sample mean x = 48.7, and sample standard deviation s = 8.5. We can calculate the t-statistic as:

t = (x - μ) / (s / √n) = (48.7 - 50) / (8.5 / √81) = -1.29

Using a t-distribution table with 80 degrees of freedom (df = n - 1), we find the critical values to be ±1.990 at a significance level of α = 0.05 (two-tailed test).

Since the calculated t-statistic (-1.29) does not fall outside the critical values, we fail to reject the null hypothesis. There is insufficient evidence to conclude that the average age of all lottery players in the county is different from 50 years at the 5% significance level.

(b) Referring to the conclusion in part (a), the type of error that may have been made is a type II error, where we fail to reject a false null hypothesis. In other words, there may not be enough evidence to conclude that the population mean age is different from 50 years, even if it truly is.

The error in this context means that the lottery official may have missed an opportunity to update their estimate of the average age of all lottery players in the county.

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4 (23) A doll maker's profit function is given by P(x) = (x-4).* - 4 (4 pts) where OCX5 3.9 find the following: (a) The critical number(s) (if any) [ Hint: Simplify the function BEFORE you take the derivative of the function] (b) The production levels in interval notation where the function is decreasing. (4pts)

Answers

The profit function P(x) is given as P(x) = (x-4)^2 - 4. To find critical numbers, the derivative of P(x) is calculated and set to zero. The intervals where the function is decreasing are determined by analyzing the sign of P'(x) on the intervals determined by the critical number(s).

Let's address each part step by step:

(a) First, let's simplify the profit function, P(x), which is given by P(x) = (x - 4)^2 - 4. To find the critical numbers, we need to find the derivative of the profit function with respect to x and set it to zero.

P'(x) = d/dx [(x - 4)^2 - 4]
P'(x) = 2(x - 4)

Now, set P'(x) to zero and solve for x:
2(x - 4) = 0
x - 4 = 0
x = 4

So, there is one critical number, x = 4.

(b) To determine the intervals where the function is decreasing, we need to analyze the sign of P'(x) on the intervals determined by the critical number(s).

For x < 4, P'(x) = 2(x - 4) < 0, which means the function is decreasing.
For x > 4, P'(x) = 2(x - 4) > 0, which means the function is increasing.

In interval notation, the function is decreasing on the interval (-∞, 4). Keep in mind that the original function has a domain restriction of 0 ≤ x ≤ 5, so considering that, the production levels where the profit function is decreasing are on the interval (0, 4).

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Find an equation of the circle drawn below.

Answers

Answer: x² + y²=6.25²

Step-by-step explanation:

Formula for a circle:

(x-h)²+(y-k)²=r²

where (h, k) is the center    yours: (0,0)

r is the raidus                                 r=6.25

Plug in:

x² + y²=6.25²

Greg uses a triangular area of his backyard as a garden. If the area of his backyard is 1,248 square feet, what is the area of the garden?

Answers

Unfortunately, we don't have enough information to determine the area of the garden. We would need to know the dimensions of the backyard and/or the garden to calculate their areas.

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7. The table shows the linear relationship between the total amount Mrs. Jacobs will be



charged for a skating party and the number of children attending.




Which equation best represents y, the total amount in dollars Mrs. Jacobs will be



charged for



x number of children attending the skating party?

Answers

Based on the information given in the table, we can see that there is a linear relationship between the total amount Mrs. Jacobs will be charged for a skating party and the number of children attending. This means that we can use a linear equation to represent this relationship.

To find the equation, we need to determine the slope (m) and y-intercept (b) of the line. We can do this by using two points from the table: (10, 100) and (20, 180).

The slope (m) can be calculated using the formula:

m = (y2 - y1) / (x2 - x1)

Plugging in the values, we get:

m = (180 - 100) / (20 - 10) = 8

The y-intercept (b) can be found by plugging in one of the points and the slope into the equation:

y = mx + b

Using the point (10, 100) and the slope we just calculated, we get:

100 = 8(10) + b

Solving for b, we get:

b = 20

Therefore, the equation that best represents y, the total amount in dollars Mrs. Jacobs will be charged for x number of children attending the skating party, is:

y = 8x + 20

This equation shows that for every additional child that attends the skating party, Mrs. Jacobs will be charged an additional $8, and the initial cost of the party is $20.

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The figure below is not drawn to scale. The height of the triangle ABC is 2 cm shorter than its base. Find the area of the shaded portions

Answers

The area of the shaded portion in the given triangle of the attached diagram with given measurements is equal to 30 square centimeters.

In triangle ABC ,

Base 'AB' = 3+ 6 + 3

                = 12cm

In the attached figure.

Let the perpendicular line passing through C intersect on AB at point D.

Height of the triangle ABC  'CD' = 12 -2

                                                     = 10 cm

Area of triangle ABC = ( 1/2) × AB × CD

                                   = ( 1/ 2) × 12 × 10

                                   = 60 cm²

Area of triangle excluding shaded portion = ( 1/2 ) × 6 × 10

                                                                       = 30cm²

Area of the shaded portion

= Area of triangle ABC - Area of triangle excluding shaded portion

= 60 - 30

= 30 square centimeters.

Therefore, the area of the shaded portion of the triangle in the attached figure is equal to 30 square centimeters.

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The above question is incomplete, the complete question is:

The figure below is not drawn to scale. The height of the triangle ABC is 2 cm shorter than its base. Find the area of the shaded portions.

Attached figure.

let s be a finite minimal spanning set of a vector space v. that is, s has the property that if a vector is removed from s, then the new set will no longer span v.

Answers

A finite minimal spanning set of a vector space V is a set S that satisfies the following properties:

S is a spanning set of V, i.e., every vector in V can be expressed as a linear combination of vectors in S.S is finite, i.e., it contains a finite number of vectors.S is minimal, i.e., no vector can be removed from S without destroying the spanning property.

In other words, S is the smallest set of vectors that can be used to generate V. If we remove any vector from S, the resulting set will not be able to generate V anymore.

The concept of a finite minimal spanning set is important in linear algebra, particularly in the context of basis and dimension. A basis is a linearly independent spanning set of a vector space V.

A finite minimal spanning set is also a basis of V. The dimension of a vector space is the number of vectors in any basis of V. Since a finite minimal spanning set is a basis, the dimension of V is equal to the number of vectors in S.

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Full Question: Let S be a finite minimal spanning set of a vector space V. That is, S has the property that if a vector is removed from S, then the new set will no longer span V. Prove that S must be a basis for V.

The graph of the function p(x) is represented below. On the same set of axes, sketch the function p(x + 2).

Answers

A graph of the function p(x) and the function p(x + 2) is shown below.

How to determine the factored form of a quadratic equation?

In Mathematics, the vertex form of a quadratic function is represented by the following mathematical equation:

f(x) = a(x - h)² + k

Where:

h and k represents the vertex of the graph.a represents the leading coefficient.

Based on the information provided above, we can determine the value of a as follows:

f(x) = a(x - h)² + k

0 = a(-3 - 0)² + 4

0 = 9a + 4

a = -4/9

Therefore, the required quadratic function is given by:

f(x) = a(x - h)² + k

p(x) = y = -4/9(x - 0)² + 4

p(x + 2) = -4/9(x + 2)² + 4

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

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