The group of friends can consist of at most 9 people, given the budget constraint and pricing can go to the amusement park.
The inequality to determine the number of people who can go to the amusement park can be written as: 38.75p + 16.25 ≤ 365.
Where p represents the number of people and the left-hand side of the inequality represents the total cost of admission and parking for p people.
The inequality is set up such that the total cost cannot exceed the given budget of $365.
To solve this inequality, we can first subtract 16.25 from both sides: 38.75p ≤ 348.75. Then, divide both sides by 38.75: p ≤ 9
To determine the maximum number of people who can go to the amusement park with a given budget,
we can write and solve an inequality based on the cost of parking and admission per person.
In this case, the inequality is 38.75p + 16.25 ≤ 365, and the solution is p ≤ 9.
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Trevor is comparing two mortgage options from two different banks for his 20 year $120,000 mortgage. He thinks both mortgages are pretty much the same and is having a hard time deciding which bank to partner with. Bank A: 5% with monthly payments of $791. 95 Bank B: 4. 75% with monthly payments of $775. 47
Bank B is offering a lower interest rate and will result in a lower total cost over the 20-year period. Even though the monthly payment is slightly lower with Bank B, Trevor should choose Bank B because he will save money in the long run due to the lower interest rate.
Which bank should Taravar choose? in which he will save money in the long run due to the lower interest rate.To compare the two mortgage options, Trevor needs to consider both the interest rate and the monthly payment amount.
Bank A offers a 5% interest rate with a monthly payment of $791.95. The total amount he will pay over 20 years is:
$791.95 x 12 months/year x 20 years = $190,068
Bank B offers a 4.75% interest rate with a monthly payment of $775.47. The total amount he will pay over 20 years is:
$775.47 x 12 months/year x 20 years = $186,113.60
So, in this case, Bank B is offering a lower interest rate and will result in a lower total cost over the 20-year period. Even though the monthly payment is slightly lower with Bank B, Trevor should choose Bank B because he will save money in the long run due to the lower interest rate.
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A baker puts 4 cups of fruit into each pie he bakes. He pays $0.75 for 1 cup of fruit and $2.50 for the pie crust. He sells each pie for $10.25. After subtracting the cost of the fruit and pie crust, how much does he earn if he sells 10 pies?
PLEEEEES HELPMEEEEE
Step 1: Find the cost of 1 pie
1 pie = 4 cups of fruit + 1 pie crust
1 pie = 4(0.75) + 1(2.50)
1 pie = 3 + 2.50
1 pie = 5.50
Step 2: Find the amount of money a baker makes by selling 1 pie
1 pie cost = 5.50
1 pie revenue = 10.25
1 pie profit = 4.75
Step 3: Find the amount of money a baker makes by selling 10 pies
1 pie profit = 4.75
10 pies profit = 47.5
Answer: $47.50
Hope this helps!
Suppose z = x+ sin(y) , x = 2t = - 482, y = 6st. - 1 A. Use the chain rule to find дz as and Oz as functions of дz Ət X, Y, s and t. - az მs/Əz as/Əz B. Find the numerical values of and o"
The numerical value of Oz is approximately -1819.86.
Using the chain rule, we have:
[tex]dz/dt = dz/dx * dx/dt + dz/dy * dy/dt\\dz/ds = dz/dy * dy/ds[/tex]
We can calculate each term using the given equations:
dz/dx = 1
dx/dt = 2
dy/dt = 0
dz/dy = cos(y)
dy/ds = 6t
Substituting these values, we get:
[tex]dz/dt = dz/dx * dx/dt + dz/dy * dy/dt = 1 * 2 + cos(y) * 0 = 2\\dz/ds = dz/dy * dy/ds = cos(y) * 6t = 6t * cos(6st)[/tex]
To find дz as/Əz, we need to solve for as in terms of z and s:
z = x + sin(y) = 2t + sin(6st)
x = 2t
y = 6st - 1
Solving for s in terms of t, we get:
s = (y + 1)/(6t)
Substituting this into the equation for z, we get:
z = 2t + [tex]sin(6t(y+1)/(6t)) = 2t + sin(y+1)[/tex]
Taking the partial derivative of z with respect to as, we get:
[tex]дz/Əz = 1[/tex]
B. To find the numerical values of дz and Oz, we need to plug in the given values of x, y, s, and t into our equations. Using the given values, we get:
x = 2t = -964
y = 6st - 1 = -3617
z = x + sin(y) = -964 + sin(-3617) ≈ -964.73
Using the values of s and t, we can find:
s = (y + 1)/(6t) ≈ -0.9985
t = x/2 ≈ -482
Substituting these values into our equation for дz as/Əz, we get:
дz/Əz = 1
Therefore, the numerical value of дz is 1.
Substituting these values into our equation for dz/ds, we get:
dz/ds = 6t * cos(6st) ≈ -1819.86
Therefore, the numerical value of Oz is approximately -1819.86.
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Eddie's dog weighs 31. 8 kilograms. How many grams are equivalent to 31. 8 kilograms?
A). 0318 grams
B) 318 grams
() 3,180 grams
D) 31,800 grams
31.8 kilograms is equivalent to 31,800 grams.
What is the weight in grams of Eddie's 31.8 kg dog?The correct answer is (D) 31,800 grams.
To convert kilograms to grams, we multiply the number of kilograms by 1000. So, to convert 31.8 kilograms to grams, we can use the following formula:
31.8 kilograms x 1000 grams/kilogram = 31,800 grams
Therefore, 31.8 kilograms is equivalent to 31,800 grams.
To convert kilograms to grams, we need to multiply the number of kilograms by 1000 because there are 1000 grams in one kilogram. In this case, Eddie's dog weighs 31.8 kilograms. To find out how many grams this is, we simply multiply 31.8 by 1000, which gives us 31,800 grams. Therefore, 31.8 kilograms is equivalent to 31,800 grams. It's important to understand the basic metric system conversions, like kilograms to grams, as they are commonly used in everyday life, particularly when it comes to measuring weight. Knowing how to make these conversions can be helpful in many different situations, from cooking and baking to medical and scientific contexts.
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WALK THE PATH SHOWN WHAT IS THE DISTANCE
Answer:
D. 4π
Step-by-step explanation:
Circumference: C = 2πr = 2π(8) = 16π
The distance = 1/4 circumference (angle is 90 degrees)
=> distance = 16π/4 = 4π
Suppose that a report by a leading medical organization claims that the healthy human heart beats an average of 72 times per minute. Advances in science have led some researchers to question if the healthy human heart beats an entirely different amount of time, on average, per minute. They obtain pulse rate data from a sample of 85 healthy adults and find the average number of heart beats per minute to be 76, with a standard deviation of 13. Before conducting a statistical test of significance, this outcome needs to be converted to a standard score, or a test statistic. What would that test statistic be
The test statistic (or standard score) would be 1.72.
To convert the outcome of the pulse rate data to a standard score, we would need to calculate the z-score. The formula for the z-score is: (sample mean - population mean) / (standard deviation / square root of sample size).
In this case, the sample mean is 76, the population mean (according to the report) is 72, the standard deviation is 13, and the sample size is 85. Plugging these values into the formula, we get:
(76 - 72) / (13 / sqrt(85)) = 1.72.
Therefore, the test statistic (or standard score) is 1.72. This indicates that the sample mean of 76 is 1.72 standard deviations above the population mean of 72. This information can be used to conduct a statistical test of significance and determine whether the difference between the sample mean and population mean is statistically significant.
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answer options:
x= 3, -4
x= 5, -1
x= 0, 5
x= 1, 5
From the given graph, the roots of the quadratic equation, 0 = x² - 6x + 5, is 1 and 5. The correct option is the last option x= 1, 5
Determining the roots of a quadratic function from the graphFrom the question, we are to determine the roots of the quadratic equation from the provided graph.
From the given information,
The given quadratic equation is
0 = x² - 6x + 5
The roots of a quadratic function are the values of x where the function equals zero. On a graph, this corresponds to the points where the graph intersects the x-axis.
From the graph, we will read the x-coordinates of the points where the graph intersects the x-axis.
From the given graph, the x-coordinates of the points where the graph intersects the x-axis are 1 and 5
Hence, the roots of the quadratic equation is 1 and 5
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In circle P with m \angle NPQ= 104m∠NPQ=104 and NP=9NP=9 units find area of sector NPQ. Round to the nearest hundredth
Area of sector NPQ ≈ 127.23 square units
To find the area of the sector NPQ, we first need to find the measure of the central angle that defines the sector. We know that the measure of the angle NPQ is 104 degrees, but we need to find the measure of the central angle that includes this arc.
Since NP is a radius of the circle, we know that triangle NQP is an isosceles triangle, with angles NQP and PNQ each measuring (180 - 104)/2 = 38 degrees. Therefore, the measure of the central angle that includes arc NPQ is 2 * 38 + 104 = 180 degrees.
The area of the sector NPQ is then a fraction of the total area of the circle, where the fraction is equal to the ratio of the central angle to the total angle around the circle. Since the total angle around a circle is 360 degrees, the fraction of the circle's area covered by the sector is:
180 degrees / 360 degrees = 1/2
Therefore, the area of the sector NPQ is equal to half the area of the circle with radius 9 units:
Area of sector NPQ = (1/2) * π * 9^2 = 40.5π
Rounding to the nearest hundredth, the area of the sector NPQ is approximately:
Area of sector NPQ ≈ 127.23 square units
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A number cube is rolled twice. what is the probability of getting a six on the first role, then a number less than 5 on the second roll?
If a number cube is rolled twice, then the probability of getting a six on the first role and then a number less than 5 on the second role is 1/9.
To find the probability of getting a six on the first roll and a number less than 5 on the second roll, we will multiply the individual probabilities of each event.
A number cube has 6 faces, so the probability of rolling a six is 1/6.
For the second roll, there are 4 numbers less than 5 (1, 2, 3, and 4), so the probability of rolling a number less than 5 is 4/6 or 2/3.
To find the combined probability, simply multiply the two probabilities: (1/6) × (2/3) = 2/18 = 1/9.
So, the probability of getting a six on the first roll and a number less than 5 on the second roll is 1/9.
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A parabola has a focus of (22, 3) and a directrix of y 5 1. answer each question about the parabola, and explain your reasoning.
a. what is the axis of symmetry?
b. what is the vertex?
c. in which direction does the parabola open?
The parabola has an axis of symmetry x=22, vertex at (22, 2), and opens downward.
Given the focus (22, 3) and directrix y=1, we can determine the following:
a. Axis of symmetry: Since the parabola is vertical (directrix is horizontal), the axis of symmetry will be a vertical line passing through the focus. So, x=22 is the axis of symmetry.
b. Vertex: The vertex is the midpoint between the focus and the directrix. To find the vertex, average the y-coordinates of the focus and the directrix. Vertex = (22, (3+1)/2) = (22, 2).
c. Direction: If the focus is above the directrix, the parabola opens upward. If the focus is below the directrix, the parabola opens downward. In this case, the focus (22, 3) is above the directrix y=1, so the parabola opens downward.
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Is the expression (x + 18) a factor of x² - 324?
Answer: We can check whether the expression (x + 18) is a factor of x² - 324 by dividing x² - 324 by (x + 18) using polynomial long division or synthetic division.
Using polynomial long division:
x + 18 │x² + 0x - 324
-x² - 18x
----------
18x - 324
18x + 324
----------
0
Since there is no remainder, we can see that (x + 18) is indeed a factor of
x² - 324.
The square pyramid has a base with an area of 64 cm and a slant height of 9 cm. What is the height of the pyramid
To find the height of the square pyramid, we will use the Pythagorean theorem. Given the area of the base is 64 cm² and the slant height is 9 cm, let's first find the side length of the base.
Since it's a square, the area of the base is side length squared (s²). Therefore, s² = 64 cm². Taking the square root of both sides, we get s = 8 cm.
Now, let the height be h and use the Pythagorean theorem with the side length (8 cm) and the slant height (9 cm):
h² + (s/2)² = (slant height)²
h² + (8/2)² = 9²
h² + 4² = 81
h² + 16 = 81
h² = 65
Taking the square root of both sides:
h = √65 cm ≈ 8.06 cm
The height of the pyramid is approximately 8.06 cm.
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PLEASE HELP WITH 4 AND 5
1. The area of the shaded region is
2. percentage of the shaded part is 89.6%
What is area of shape?The area of a shape is the space occupied by the boundary of a plane figures like circles, rectangles, and triangles.
The area of the shaded part = area of the rectangle - area of unshaded part
Area of rectangle = 7× 11 = 77 unit²
area of rectangle = 1/2 bh
= 1/2 × 4 × 4
= 1/2 × 8
= 4 unit²
area of second triangle = 4 units²
area of unshaded part = 4+4 = 8 units²
area of shaded part = 77-8 = 69units²
2. percentage of the rectangle shaded = 69/77 × 100
= 6900/77 = 89.6%
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The table shows transactions from a bank account. fill in the missing number for box a.
transaction amount
account balance
transaction 1
150 150
transaction 2
50 100
transaction 3
90 a
transaction 4
-200 b
transaction 5
c 0
btw this is integers
The missing number for box a transaction amount account balance are a = 10, b = 210, c = 210.
Using the information provided in the table, we can fill in the missing numbers as follows:
For transaction 3: The account balance after transaction 2 was $100, and transaction 3 had an amount of $90. Therefore, the account balance after transaction 3 is $190. Hence, the missing number in box a is 190.
For transaction 4: The account balance after transaction 3 was $190, and transaction 4 had an amount of -$200. Therefore, the account balance after transaction 4 is -$10. Hence, the missing number in box b is -10.
For transaction 5: The account balance after transaction 4 was -$10, and transaction 5 had an amount of $c. Therefore, the account balance after transaction 5 is 0. Hence, the missing number in box c is 10.
Therefore, the completed table is:
transaction amount account balance
1 150 150
2 50 100
3 90 190
4 -200-10
5 10 0
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Find dy/dx. x =^9root (t) y = 9 - t dy/dx = _____
To find dy/dx, we need to take the derivative of y with respect to x. On evaluating the value of dy/dx is [tex]-9t^{8/9}[/tex]
However, we are given x in terms of t. So first, we need to use the chain rule to find dx/dt:
x = [tex]t^{1/9}[/tex]
dx/dt = (1/9) * [tex]t^{-8/9}[/tex]
Now, we can use the chain rule again to find dy/dt:
y = 9 - t
dy/dt = -1
Finally, we can use the formula for the chain rule to find dy/dx:
dy/dx = (dy/dt) / (dx/dt)
dy/dx = (-1) / ((1/9) * [tex]t^{-8/9}[/tex]
dy/dx = [tex]-9t^{8/9}[/tex]
So, the final answer is dy/dx = [tex]-9t^{8/9}[/tex]
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The school assembly is being held over the lunch hour in the school gym. All the teachers and students are there by noon and the assembly begins. About 45 minutes after the assembly begins, the temperature within the gym remains a steady 77 degrees Fahrenheit for a few minutes. As the students leave after the assembly ends at the end of the hour, the gym begins to slowly cool down
1 hour =60 minutes
Step-by-step explanation:
Let M be the time in minutes . T be temperature in Farhenheit. From 45th min to end of the hour there remains a steady temperature. after that gyms starts to cools down . For time 45≤M≤60, Temperature T=77oF.To find a) Is M a function of T ? we know that Temperature changes with respect to time . So M is independent variable and T is dependent variable . so M cannot be a function of T .
Two containers are mathematically similar.
Their volumes are 54cm3
and 128 cm3
.
The height of the smaller container is 4.5cm.
Calculate the height of the larger container
Answer: 6cm
Step-by-step explanation: VF=(SF)^3
let x be the height of the larger container
VF1/VF2=(SF1/SF2)^3
54/128=(4.5/X)^3
rearrange to find x
x=cube root of (4.5^3*128)/54
x=6cm
Find the volume of a pyramid with a square base, where the side length of the base is
11. 8 ft and the height of the pyramid is 5. 2 ft. Round your answer to the nearest
tenth of a cubic foot.
The volume of the pyramid with a square base of side length 11.8 ft and a height of 5.2 ft is 240.0 cubic feet.
To find the volume of a pyramid with a square base of side length 11.8 ft and a height of 5.2 ft, you can use the following formula:
Volume = (1/3) × Base Area × Height
1: Find the base area.
The base is a square with a side length of 11.8 ft, so the area of the base is:
Base Area = Side Length × Side Length
Base Area = 11.8 ft × 11.8 ft
Base Area ≈ 139.24 square ft
2: Find the volume.
Now, use the formula to find the volume:
Volume = (1/3) × Base Area × Height
Volume = (1/3) × 139.24 sq ft × 5.2 ft
Volume ≈ 240.0368 cubic ft
3: Round your answer to the nearest tenth.
Volume ≈ 240.0 cubic ft
So, the volume of the pyramid is approximately 240.0 cubic feet.
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Write the explicit formula for the following sequence, then generate the first five terms. A1 = 256, r = 0. 25
The explicit formula for the given sequence is An = 256 * (0.25)ⁿ⁻¹, where n is the term number. Using this formula, we can generate the first five terms of the sequence as follows:
A1 = 256 * (0.25)¹⁻¹ = 256 * 1 = 256
A2 = 256 * (0.25)²⁻¹ = 256 * 0.25 = 64
A3 = 256 * (0.25)³⁻¹ = 256 * 0.0625 = 16
A4 = 256 * (0.25)⁴⁻¹ = 256 * 0.015625 = 4
A5 = 256 * (0.25)⁵⁻¹ = 256 * 0.00390625 = 1
In simpler terms, the explicit formula for the given sequence is found by multiplying the first term by the common ratio raised to the power of n-1, where n is the term number. This results in a decreasing sequence as the common ratio is less than 1. The first five terms of the sequence are 256, 64, 16, 4, and 1, respectively.
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The coiling dragon cliff skywalk in china is $128$ feet longer than the length $x$ (in feet) of the tianmen skywalk in china. The world's longest glass-bottom bridge, located in china's zhangjiaji national park, is about $4. 3$ times longer than the coiling dragon cliff skywalk. Write and simplify an expression that represents the length (in feet) of the world's longest glass-bottom bridge
The expression that represents the length (in feet) of the world's longest glass-bottom bridge is 4.3x+550.4.
Let's denote the length of the Coiling Dragon Cliff Skywalk as y (in feet). According to the given information, we have:
y = x + 128
The length of the world's longest glass-bottom bridge is 4.3 times longer than the Coiling Dragon Cliff Skywalk, so we can write an expression for it as:
Length of the longest glass-bottom bridge = 4.3 * y
Now, we can substitute the expression for y from the first equation:
Length of the longest glass-bottom bridge = 4.3 * (x + 128)
To simplify, distribute the 4.3:
Length of the longest glass-bottom bridge = 4.3x + 550.4
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We told Gavin not to run but he did anyway he took 18 steps from second base got caught and took 7 steps back then 3 steps forward 5 steps back and 11 steps forward and 4 steps back and was tagged out halfway between second and third base how many steps is it from second base to third pls help
it is 16 steps from second base to third base .we can get this answer by
solving the logic given in the question .we need to add up the number of steps
what is add up ?
"Add up" means to calculate the total of two or more numbers or quantities by combining them together. It involves the mathematical operation of addition, which is the process of finding the sum of two or more numbers. For example, if you add up the numbers 3, 5, and 7, t
In the given question,
To find out how many steps it is from second base to third base, we need to add up the number of steps Gavin took in each direction.
Starting at second base, he took 18 steps forward to get caught, and then took 7 steps back. This leaves him 11 steps forward from second base.
Next, he took 3 more steps forward, for a total of 14 steps forward from second base. But then he took 5 steps back, leaving him 9 steps forward from second base.
Then he took 11 more steps forward, for a total of 20 steps forward from second base. But then he took 4 steps back, leaving him 16 steps forward from second base.
Finally, he was tagged out halfway between second and third base. Since he was 16 steps forward from second base, and halfway between second and third base, we can assume that third base is 16 steps away from second base.
Therefore, it is 16 steps from second base to third base.
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Classify triangle ABD by its sides and then by its angles.
Select the correct terms from the drop-down menus.
Image shows a triangle ABD having three sides of unequal length and one angle larger than 90 degrees.
Triangle ABD is
and
.
.
Triangle ABD is scalene and obtuse.
How to classify the triangle?The triangle has three sides of unequal length, hence it is classified as an scalene triangle.
(it would be equilateral if all had the same length, and isosceles if two sides have the same length).
The triangle has one angle larger than 90º, hence it is classified as an obtuse triangle.
(acute with no angles of 90º or greater, right with one angle of exactly 90º).
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From the information given, find the quadrant in which the terminal point determined by t lies. input i, ii, iii,
or iv.
(a) sin(t) < 0 and cos(t) < 0, quadrant
(b) sin(t) > 0 and cos(t) < 0, quadrant
(c) sin(t) > 0 and cos(t) > 0, quadrant
(d) sin(t) < 0 and cos(t) > 0, quadrant
;
Answer:
Step-by-step explanation:
In option (a), sin(t) < 0 and cos(t) < 0, In trigonometry, the terminal point of an angle t is the point on the unit circle where the angle intersects with the circle.
The position of the terminal point determines the quadrant in which the angle lies.
To determine the quadrant, we need to look at the signs of the sine and cosine functions. In quadrant I, both sine and cosine are positive. In quadrant II, sine is positive and cosine is negative. In quadrant III, both sine and cosine are negative. In quadrant IV, sine is negative and cosine is positive.
In option (a), sin(t) < 0 and cos(t) < 0, both the sine and cosine functions are negative. This means that the terminal point lies in quadrant III.
In option (b), sin(t) > 0 and cos(t) < 0, the sine function is positive and the cosine function is negative. This means that the terminal point lies in quadrant II.
In option (c), sin(t) > 0 and cos(t) > 0, both the sine and cosine functions are positive. This means that the terminal point lies in quadrant I.
In option (d), sin(t) < 0 and cos(t) > 0, the sine function is negative and the cosine function is positive. This means that the terminal point lies in quadrant IV.
In summary, the signs of the sine and cosine functions can be used to determine the quadrant in which the terminal point lies.
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(4y + z)^2 what is the a value and what is the b value
Answer:
a = 16
b = 8z
Step-by-step explanation:
Expanding the given expression, we get:
(4y + z)^2 = (4y + z) × (4y + z)
= 16y^2 + 8yz + z^2
Comparing this with the general form of a quadratic expression, ax^2 + bx + c, we can see that:
a = 16
b = 8z
Therefore, the value of a is 16 and the value of b is 8z.
What is the maximum height of Anna’s golf ball? The equation is y=x-0. 04x^2.
The maximum height is____ feet
The maximum height of Anna's golf ball is 6.25 feet.
To find the maximum height of Anna's golf ball, we need to determine the vertex of the parabolic equation y = x - 0.04x^2. The x-coordinate of the vertex can be found using the formula:
x = -b / (2a)
In this case, the coefficients a and b are:
a = -0.04
b = 1
Substituting the values into the formula:
x = -1 / (2 * -0.04)
x = -1 / (-0.08)
x = 12.5
Now, we need to find the y-coordinate of the vertex by plugging the x-coordinate back into the equation:
y = 12.5 - 0.04(12.5)^2
y = 12.5 - 0.04(156.25)
y = 12.5 - 6.25
y = 6.25
So, the maximum height of Anna's golf ball is 6.25 feet.
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Kevin works 3z hours each day from Monday to Friday. He works (4z-7) on Saturday. Kevin does not work on Sunday. Find the number of hours Kevin works in one week in terms of z
Answer:
im gooder like that
Step-by-step explanation:
3z*5=15z
15z+4z-7
19z-7
The food company is now designing soup boxes. The largest box of soup will be a dilation of the smallest box using a scale factor of 2. The Smallest box hold 8 fl oz or about 15 cubic inches of soup find a set of dimensions for the largest box? round your answer to the nearest tenth if necessary
The largest box of soup will hold about 120 ounces or 221 cubic inches of soup.
Since the scale factor is 2, the volume of the largest box will be 2^3 = 8 times the volume of the smallest box. Therefore, the volume of the largest box will be 8 x 15 cubic inches = 120 cubic inches. To find the dimensions of the largest box, we need to find the cube root of 120 cubic inches, which is approximately 5.87 inches.
Since the smallest box has no shape restrictions, we can assume that the largest box will also have a rectangular shape. Therefore, a set of dimensions for the largest box could be 5.87 inches x 5.87 inches x 5.87 inches, or rounded to the nearest tenth, 5.9 inches x 5.9 inches x 5.9 inches.
This would result in a volume of approximately 221 cubic inches, which is about 120 ounces of soup.
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A museum groundskeeper is creating a simicircular stauary garden with a diameter of 38 feet there will be a fence around the garden the fencing cost $9.25 per linear foot . About how much will the fencing cost although? Round to the nearest hundredth use 3.14 for n the fencing will cost about $
The amount for the fencing cost is $903. 36
How to determine the valueFrom the information given, we have that the shape of the garden is semi -circle.
Now, the formula that is used for calculating the circumference of a semicircle is expressed as;
C = πr + 2r
Given that the parameters of the equation are;
C is the circumference of the semicircler is the radius of the semicircleFrom the information given,
Substitute the values, we have;
Circumference = 3.14(19) + 2(19)
expand the bracket
Circumference = 59. 66 + 38
Add the values
Circumference = 97. 66 feet
Then,
if 1 feet = $9.25
Then, 97. 66 feet = x
x = $903. 36
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Use spherical coordinates to evaluate the triple integral
∫∫∫E 4x^2 + 3dV = ______
The evaluation of the triple integral ∫∫∫E 4[tex]x^{2}[/tex] + 3dV is (38/15)ππ
To evaluate the triple integral ∫∫∫E 4x^2 + 3dV in spherical coordinates, we need to express the integrand and the volume element dV in terms of the spherical coordinates ρ, θ, and φ.
The volume element dV in spherical coordinates is given by:
dV = sin φ dρ dθ dφ
where ρ is the radial distance, θ is the azimuthal angle, and φ is the polar angle.
The region E in which we are integrating can be defined in spherical coordinates as follows:
0 ≤ ρ ≤ 2
0 ≤ θ ≤ 2π
0 ≤ φ ≤ π/2
Substituting these expressions into the volume element, we have:
dV = sin φ dρ dθ dφ
= (sin φ) dρ dθ dφ
Now, we need to express the integrand 4[tex]x^2[/tex] + 3 in terms of the spherical coordinates.
The variable x can be expressed in terms of the spherical coordinates as:
x = ρ sin φ cos θ
Therefore, 4[tex]x^2[/tex] + 3 can be expressed as:
4[tex]x^2[/tex] + 3 = 4 [tex]sin^2[/tex] φ [tex]cos^2[/tex] θ + 3
Substituting this expression into the triple integral, we have:
∫∫∫E 4[tex]x^2[/tex] + 3dV
Now, we can evaluate the integral by performing the integration in the order φ, θ, ρ.
= (8/15)π + 2π
= (38/15)ππ
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In Exercises 1-11, calculate all four second-order partial derivatives and check that fxy = fyx. Assume the variables are restricted to a domain on which the function is defined. 1. f(x,y) = (x + y)2 2. f(x,y) = (x + y) 3. f(x,y) = 3x"y + 5xy! 4. f(x,y) = 2xy 5. f(x,y) = (x + y)ey 6. f(, y) = xe 7. f(x, y) = sin(x/y) 8. f(x,y) = x2 + y2 9. f(x, y) = 5x®y2 - 7xy? + 9x² +11 10. f(x, y) = sin(x2 + y2) 11. f(x, y) = 3 sin 2x cos 5y
For each function, all four second-order partial derivatives are f(x,y) are (x + y)2, (x + y), 3x^2y + 5xy^2, 2xy, (x + y)e^y, xe^y, sin(x/y), x^2 + y^2, 5x^3y^2 - 7xy^3 + 9x^2 +11, sin(x^2 + y^2) and 3 sin(2x) cos(5y). It is proved that f x y is equals to f y x.
f(x,y) = (x + y)2
f x x = 2, f xy = 2, f yx = 2, f y y = 2
Since f x y = fy x, the mixed partial derivatives are equal.
f(x,y) = (x + y)
f x x = 0, f x y = 1, f y x = 1, f y y = 0
Since f x y = f y x, the mixed partial derivatives are equal.
f(x, y) = 3x^2y + 5xy^2
f x x = 6y, f x y = 6x + 10y, f y x = 6x + 10y, f y y = 10x
Since f x y = f y x, the mixed partial derivatives are equal.
f(x, y) = 2 x y
f x x = 0, f x y = 2, f y x = 2, f y y = 0
Since f x y = f y x, the mixed partial derivatives are equal.
f(x,y) = (x + y) * e^y
f x x = e^y, f x y = e^y + e^y, f y x = e^y + e^y, f y y = (x + 2y) * e^y
Since f x y = f y x, the mixed partial derivatives are equal.
f(x,y) = x * e^y
f x x = 0, f x y = e^y, fy x = e^y, f y y = x * e^y
Since fx y = fy x, the mixed partial derivatives are equal.
f(x, y) = sin(x/y)
f x x = -sin(x/y) / y^2, f x y = cos(x/y) / y^2, f y x = cos(x/y) / y^2, f y y = -x * cos(x/y) / y^4 - sin(x/y) / y^2
Since f x y = f y x, the mixed partial derivatives are equal.
f(x, y) = x^2 + y^2
f x x = 2, f x y = 0, f y x = 0, f y y = 2
Since f x y = f y x, the mixed partial derivatives are equal.
f(x, y) = 5x^2y^2 - 7xy + 9x^2 + 11
f x x = 10xy^2 + 18, f x y = 10x^2y - 7, f y x = 10x^2y - 7, fy y = 10x^2y^2
Since fx y = fy x, the mixed partial derivatives are equal.
f(x,y) = sin(x^2 + y^2)
fx x = 2xcos(x^2 + y^2), fx y = 2ycos(x^2 + y^2), fy x = 2ycos(x^2 + y^2), fy y = 2x * cos(x^2 + y^2)
Since fx y = fy x, the mixed partial derivatives are equal.
f(x,y) = 3sin(2x)cos(5y)
fx x = 0, fx y = -30sin(2x)sin(5y), fy x = -30sin(2x)sin(5y), fy y = 0
Since fx y = fy x, the mixed partial derivatives are equal.
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