Answers
Answer:
(x + 5)² + (y – 1)² = 25
Step-by-step explanation:
Note that the general equation of a circle is (x – h)² + (y – k)² = r², where (h, k) represents the location of the circle's center, and r represents the length of its radius.
The circle is 10 units in diamater, so the radius is half this: r=10/2=5.
The circle goes from -10 to 0 along the x-axis, so the x-coordinate of its centre is halfway between this: h=(-10+0)/2=-10/2=-5
The circle goes from -4 to 6 along the y-axis, so the y-coordinate of its centre is halfway between this: k=(-4+6)/2=-2/2=1
Now that we know r, h, and k, we can sub these into the general formula to get our equation:
(x - (-5))² + (y – 1)² = 5²
(x + 5)² + (y – 1)² = 25
Related Questions
what does a fraction that is horizontally compressed versus vertically compressed look like?
Answers
Answer:
Fractions are like pancakes: you can flatten them horizontally or vertically. Horizontal flattening means you shrink the x-value by multiplying it by a huge number before doing anything else. Vertical flattening means you squish the y-value by multiplying the whole function by a tiny number. For example, if f (x) = x^2, then f (2x) is horizontally flattened by 2 and f (0.5x^2) is vertically flattened by 0.5. Don't worry, it's not rocket science, it's just math.
cindy bought 7/8 yard of ribbon at a craft store. Jacob bought 4/5 the length of ribbon as Cindy. How many yards of ribbon did Jacob buy?
Answers
Jacob bought 0.7 yards of ribbon.
To find out how many yards of ribbon Jacob bought, we need to determine 4/5 of the length of ribbon that Cindy bought.
Cindy bought 7/8 yard of ribbon. To find 4/5 of this length, we multiply 7/8 by 4/5:
(7/8) * (4/5) = (7 * 4) / (8 * 5) = 28/40
To simplify the fraction, we can divide both the numerator and denominator by their greatest common divisor, which is 4:
(28/4) / (40/4) = 7/10
Therefore, Jacob bought 7/10 yard of ribbon.
However, we can convert this fraction to a mixed number or decimal to express it in yards.
To convert 7/10 to a mixed number, we divide the numerator (7) by the denominator (10):
7 ÷ 10 = 0 with a remainder of 7
So, 7/10 is equivalent to 0 7/10 or 0.7 yards.
Therefore, Jacob bought 0.7 yards of ribbon.
In summary, Jacob bought 7/10 yard or 0.7 yards of ribbon.
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Question 1 (1 point)
Caroline wants to create a helix shape by using the screw modifier. Unfortunately,
when she tries the screw modifier, it keeps spinning her model around an axis
without any vertical movement. What does she need to change to get the vertical
movement that will give it a helix-like shape?
Screw option needs to be set to something greater than 0.
Screw option needs to be set to 0.
Screw option needs to be set to something less than 0.
Screw option needs to be turned off.
Question ? (1 point) ✓ Saved
Answers
The correct answer is Screw option needs to be set to something greater than 0.
To get the vertical movement and create a helix-like shape using the screw modifier, Caroline needs to change the screw option to something greater than 0.
The screw option determines the amount of vertical displacement or height of the helix shape.
By setting the screw option to a value greater than 0, Caroline can control the vertical movement of the model as it spirals along the axis, resulting in a helix-like shape.
Therefore, the correct answer is:
Screw option needs to be set to something greater than 0.
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I am trying to figure out how you would read 2.1 as time would it be hours, minutes, or seconds?
Answers
Answer: seconds
Step-by-step explanation:
What is the difference quotient of the function f(x) = 12x + 1?
Answers
The difference quotient of the function f(x) = 12x + 1 is 12.
The difference quotient of a function measures the average rate of change of the function between two points. To find the difference quotient of the function f(x) = 12x + 1, we can follow these steps:
Select two points on the function, let's call them x and x + h, where h is a small positive value.
Evaluate the function at those two points to get the corresponding y-values. For f(x) = 12x + 1, we have:
f(x) = 12x + 1
f(x + h) = 12(x + h) + 1
Calculate the difference quotient by subtracting the values and dividing by h:
[f(x + h) - f(x)] / h
= [(12(x + h) + 1) - (12x + 1)] / h
= [12x + 12h + 1 - 12x - 1] / h
= (12h) / h
= 12
In this case, since the function is linear with a slope of 12, the difference quotient is constant and equal to the slope of the function. This means that for every unit increase in x, the function f(x) increases by 12.
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What is the surface area of a triangular with 6, 7cm 4cm 12cm
Answers
The surface area of the given triangle is approximately 33.74 square centimeters.
To calculate the surface area of a triangle, we need the lengths of two sides and the included angle between them. However, in this case, you provided the lengths of all three sides (6 cm, 7 cm, and 12 cm).
To determine the surface area, we can use Heron's formula, which is applicable to triangles with all three side lengths known.
Heron's formula states that the surface area (A) of a triangle with side lengths a, b, and c is given by:
[tex]A = \sqrt(s \times (s - a) \times (s - b) \times (s - c))[/tex]
where s is the semi perimeter of the triangle, calculated as:
s = (a + b + c) / 2
Plugging in the given side lengths, we have:
s = (6 cm + 7 cm + 12 cm) / 2 = 25 / 2 = 12.5 cm
Now we can substitute the values into Heron's formula:
[tex]A = \sqrt(12.5 cm \times (12.5 cm - 6 cm) \times (12.5 cm - 7 cm) \times (12.5 cm - 12 cm))[/tex]
[tex]= \sqrt(12.5 cm \times 6.5 cm \times 5.5 cm \times 0.5 cm)[/tex]
= √(1137.5 cm^4)
≈ 33.74 cm^2
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Place point Q on the graph to indicate an unemployment rate of 100 percent, point R to indicate full employment, and point S to indicate where the U.S. economy usually operates.
Answers
In a Production Possibility Curve (PPC) with product output Y on the vertical axis and product output X on the horizontal axis the following points are described as follows.
Explanation for PPC- Point Q represents an unemployment rate of 100 percent. It is located at the origin, where both axes intersect, indicating no product output due to complete unemployment.
- Point R signifies full employment and is located at the maximum product output on the X-axis, showing the economy's capacity when all resources are fully utilized.
- Point S indicates where the US economy typically operates, within the usual range of product output levels on the X-axis, reflecting a balanced unemployment rate that includes frictional and structural unemployment.
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Millman’s golfing group is terrific for a group of amateurs. Are they ready to turn pro? Here’s the data. (Hint: Remember that the lower the score [in golf], the better!)
Milkman’s Group: size 9, average score 82, standard deviation 2.6
The pros: size 500, average score 71, standard deviation 3.1
Answers
Based on the average scores and standard deviations, it appears that Millman's group still has room for improvement before they can reach the level of professional golfers.
To determine whether Millman's golfing group is ready to turn pro, we can compare their performance to that of professional golfers. Based on the provided data, Millman's group consists of 9 amateurs with an average score of 82 and a standard deviation of 2.6.
On the other hand, the professional golfers consist of 500 individuals with an average score of 71 and a standard deviation of 3.1.
To make a meaningful comparison, we can look at the average scores of the two groups. The average score is an indicator of the overall performance, with lower scores being better in golf.
In this case, the professional golfers have an average score of 71, while Millman's group has an average score of 82. This suggests that the professional golfers perform better, on average, than Millman's group.
However, it is also essential to consider the standard deviation, which measures the variability of scores within each group. A smaller standard deviation indicates less variation and greater consistency in performance.
The professional golfers have a standard deviation of 3.1, while Millman's group has a standard deviation of 2.6. This suggests that Millman's group has slightly less variation in scores compared to the professional golfers.
Overall, based on the average scores and standard deviations, it appears that Millman's group still has room for improvement before they can reach the level of professional golfers.
The professional golfers demonstrate better performance, on average, and a slightly higher variability in scores compared to Millman's group. Therefore, it would be advisable for Millman's group to continue refining their skills and striving to improve their scores before considering turning pro.
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How would I find cos?
Answers
When [tex]sin(\theta) = -0.42[/tex] and [tex]\pi < \theta < 3\pi/2[/tex], the value of [tex]cos(\theta)[/tex] is approximately 0.9071.
To find the value of cos([tex]\theta[/tex]) given[tex]sin(\theta) = -0.42[/tex] and [tex]\pi < \theta < 3\pi/2[/tex], we can use the trigonometric identity:
[tex]sin^2(\theta) + cos^2(\theta) = 1[/tex]
Since we are given sin(theta) = -0.42, we can substitute this value into the equation:
[tex](-0.42)^2 + cos^2(\theta) = 1[/tex]
Simplifying:
[tex]0.1764 + cos^2(\theta) = 1[/tex]
Subtracting 0.1764 from both sides:
[tex]cos^2(\theta) = 0.8236[/tex]
Taking the square root of both sides (since cos(theta) is positive):
[tex]cos(\theta) = \sqrt{(0.8236)} \\cos(\theta) = 0.9071[/tex]
Therefore, when [tex]sin(\theta) = -0.42[/tex] and [tex]\pi < \theta < 3\pi/2[/tex], the value of [tex]cos(\theta)[/tex]is approximately 0.9071.
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point D i ain’t the interior of ABC . what is m/ DBC
Answers
Answer:
36.5°--------------------------------
Angles ABD and DBC form a linear pair, hence their sum is 180°.
Set up an equation and solve for x:
3x + 22 + x - 4 = 1804x + 18 = 1804x = 162x = 40.5Substitute 40.5 for x and find the measure of ∠DBC:
m∠DBC = 40.5 - 4 m∠DBC = 36.53. The numbers of activities that students in two
classes participate in are shown below.
Class M
0
0
1
2
2
+
3
4 5
Number of Activities
Class N
:
+
6
3
4
Number of Activities
5
6
+
7
7
+
8 9
+
8
9
Which statement is correct?
A The distribution for Class M is approximately
symmetric.
B The distribution for Class M has at least one
outlier.
The median number of activities for Class N
is less than for Class M.
D The spread of the number of activities for
Class N is less than for Class M.
Answers
The statement that is correct option d: The spread of the number of activities for Class N is less than for Class M.
The term 'spread' in mathematics refers to the difference between the largest and smallest values in a dataset or the range of the data. It's the extent to which the dataset is spread out.The median is the center of a dataset. It's the number that lies in the middle of the sorted values. Half the values are greater than the median, while the other half are lesser than the median.
An outlier is a value that is very different from the other values in the dataset.In class M, there are no outliers. The distribution is skewed to the right since most students have only a few activities, and some have many. The median is between 2 and 3.
In class N, there are no outliers. Most students have a moderate number of activities, and the spread is less than in Class M. The median is between 5 and 6.Hence, the correct statement is The spread of the number of activities for Class N is less than for Class M.The correct answer is d
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How much money has to be invested at 2.9% interest compounded
continuously to have $34,000 after 18 years?
A. $20,173.31
B. $20,211.34
C. $20,249.07
D. $20,186.02
Answers
Answer:
None of the given options (A, B, C, D) match the correct investment amount.
Explaination:
A = P * e^(rt),
where:
A = the future amount (in this case, $34,000),
P = the principal amount (the initial investment),
e = Euler's number (approximately 2.71828),
r = the interest rate (2.9% expressed as a decimal, so 0.029),
t = the time period (18 years).
We can rearrange the formula to solve for P:
P = A / e^(rt).
Now we can plug in the given values and calculate the investment amount:
P = $34,000 / e^(0.029 * 18).
Using a calculator, we can evaluate e^(0.029 * 18) and divide $34,000 by the result to find the investment amount.
Calculating e^(0.029 * 18) gives us approximately 1.604.
P = $34,000 / 1.604 ≈ $21,179.55
What is the total amount and the amount of interest earned on $6,500 at 6% for 25 years?
Total Amount Interest Amount
compounded annually
compounded semiannually
compounded quarterly
V
Answers
Answer:
The total amount with annual compounding is 23,304.79 .
The interest with annual compounding is $18,304.79.
The total amount with semi annual compounding is 24,005.10.
The interest with semi annual compounding is $19,005.10.
The total amount with quarterly compounding is 24,377.20.
The interest with quarterly compounding is $19,377.20.
What are the total amount and interest?
The formula for determining the total amount is:
FV = PV(1 + r/m)^nm
Where:
FV =total amount
PV = amount deposited
r = interest rate
n = number of years
m = number of compounding
Interest = FV - amount deposited
FV = 5000 x (1.08)^20 = 23,304.79
Interest = 23,304.79 - 5000 = $18,304.79
FV =5000 x (1.08/2)^(2 x 20) =24,005.10
Interest = 24,005.10 - 5000 = $19,005.10
FV =5000 x (1.08/4)^(20 x 4) =24,377.20
Interest = 24,377.20 - 5000 = $19,377.20
Step-by-step explanation:
please help quick
Which of the following are solutions to the quadratic equation? Check all that
apply.
Answers
The correct solutions to the quadratic equation are:
c. -8
e. 2
To determine the solutions to the quadratic equation 2x^2 + 6x - 10 = x^2 + 6, we need to solve for x.
First, let's simplify the equation by combining like terms:
2x^2 + 6x - 10 - x^2 - 6 = 0
x^2 + 6x - 16 = 0
Now, we can solve this quadratic equation by factoring or by using the quadratic formula.
By factoring:
(x + 8)(x - 2) = 0
Setting each factor equal to zero, we get:
x + 8 = 0 --> x = -8
x - 2 = 0 --> x = 2
So, the solutions to the quadratic equation are x = -8 and x = 2.
Now, let's check the given options:
a. -2: This value is not a solution to the equation.
b. 1/3: This value is not a solution to the equation.
c. -8: This value is a solution to the equation.
d. -1/2: This value is not a solution to the equation.
e. 2: This value is a solution to the equation.
f. 8: This value is not a solution to the equation.
The following are the proper answers to the quadratic equation: c. -8 e.2
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determine the value of x
Answers
Answer:
x = 11.62
Step-by-step explanation:
opp / adj would be tangent, so the equation would be 4*tan(71) giving us 11.616, and rounding to the nearest hundredth gives you 11.62
Hope this helps :)
A shop gives an offer saying '20% discount on all products and if your bill amount (after the discount) is more than Rs 1000,
then you will get further discount of 20% on the bill amount).
Aditi buys goods worth Rs 2400 by marking price. What is the amount she needs to pay?
Answers
Answer:
Step-by-step explanation:
To calculate the amount Aditi needs to pay, we need to apply the discounts step by step based on the given offer.
Step 1: 20% discount on all products
The marked price of the goods is Rs 2400. Applying a 20% discount means she will get a reduction of 20% of the marked price.
20% of Rs 2400 = (20/100) * Rs 2400 = Rs 480
After the first discount, the new bill amount is Rs 2400 - Rs 480 = Rs 1920.
Step 2: Additional 20% discount on the bill amount if it exceeds Rs 1000
The new bill amount after the first discount is Rs 1920. If this amount exceeds Rs 1000, Aditi will get a further discount of 20% on this bill amount.
Since Rs 1920 is greater than Rs 1000, we can apply a 20% discount to it.
20% of Rs 1920 = (20/100) * Rs 1920 = Rs 384
The final amount Aditi needs to pay after both discounts is Rs 1920 - Rs 384 = Rs 1536.
Therefore, Aditi needs to pay Rs 1536.
what is the answer and how do I figure it out
Answers
Answer:
[tex]\frac{3}{7}[/tex] < [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
[tex]\frac{3}{7}[/tex] ? [tex]\frac{3}{5}[/tex]
We have to get both fractions with the same denominator to compare them.
[tex]\frac{3}{7}[/tex] = [tex]\frac{15}{35}[/tex]
[tex]\frac{3}{5}[/tex] = [tex]\frac{21}{35}[/tex]
[tex]\frac{15}{35} < \frac{21}{35}[/tex]
So, [tex]\frac{3}{7}[/tex] < [tex]\frac{3}{5}[/tex]
express 132 base 6 as a number in base five
Answers
The given number 132 from base 6 to base 10 by expanding its digits using powers of 6. The number 132 in base 6 is equal to 211 in base 5.
To express the number 132 in base 6 as a number in base 5, we need to convert the given number from base 6 to base 10 and then from base 10 to base 5.
In base 6, the digits range from 0 to 5. The positional values of the digits increase from right to left by powers of 6. Let's break down the given number 132 in base 6:
1 * 6^2 + 3 * 6^1 + 2 * 6^0
= 1 * 36 + 3 * 6 + 2 * 1
= 36 + 18 + 2
= 56 in base 10
Now, we have the number 56 in base 10. To convert it to base 5, we divide the number by 5 and record the remainders from right to left until the quotient becomes 0.
56 divided by 5 is 11 with a remainder of 1.
11 divided by 5 is 2 with a remainder of 1.
2 divided by 5 is 0 with a remainder of 2.
The remainders in reverse order give us 211 in base 5.
Therefore, the number 132 in base 6 is equal to 211 in base 5.
In summary, we converted the given number 132 from base 6 to base 10 by expanding its digits using powers of 6. Then, we divided the resulting number in base 10 by 5 to obtain the equivalent number in base 5 by recording the remainders. The final result is 211 in base 5.
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Combine like terms I need help pls!!!!
Answers
Answer:
21 - 12p
Step-by-step explanation:
I hope this helps and I'm super sorry if I'm wrong!
7 • -2p and 7 • 3
-14p + 21 + 2p
Then combine like terms
-14 + 2p
-12p + 21
pls help me with this!!!!
Answers
Answer:
The equation of a hyperbola with co-vertices at (0, 7) and (0, -7) and a transverse axis that is 12 units long is:
x²/36 - y²/49 = 1.
Therefore, the correct equation is: x²/36 - y²/49 = 1.
Jake drives a tractor from one town to another, a distance of 120 kilometers. He drives 6 kilometers per hour faster on the return trip, cutting 1 hour off the time. How fast does he drive each way?
Answers
The speed of Jake's initial trip is x = 24 kilometers per hour, and the speed of the return trip is x + 6 = 30 kilometers per hour.
Let's assume that Jake's speed during the initial trip is represented by "x" kilometers per hour.
On the return trip, he drives 6 kilometers per hour faster, so his speed can be represented as "x + 6" kilometers per hour.
To find the time taken for each trip, we can use the formula Time = Distance / Speed.
For the initial trip, the time taken is 120 kilometers divided by x kilometers per hour, which gives us 120/x hours.
On the return trip, the time taken is 120 kilometers divided by (x + 6) kilometers per hour, which gives us 120/(x + 6) hours.
According to the problem, the return trip takes 1 hour less than the initial trip. So we can set up the equation:
120/x - 1 = 120/(x + 6)
To solve this equation, we can multiply both sides by x(x + 6) to eliminate the denominators:
120(x + 6) - x(x + 6) = 120x
Simplifying this equation:
120x + 720 - x² - 6x = 120x
Combining like terms:
x² + 6x - 720 = 0
Now we can solve this quadratic equation by factoring or using the quadratic formula. By factoring, we find:
(x + 30)(x - 24) = 0
This gives us two potential solutions: x = -30 or x = 24.
Since speed cannot be negative, we discard the solution x = -30.
Therefore, the speed of Jake's initial trip is x = 24 kilometers per hour, and the speed of the return trip is x + 6 = 30 kilometers per hour.
So, Jake drives at a speed of 24 kilometers per hour on the initial trip and 30 kilometers per hour on the return trip.
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Describe a sequence of transformations that maps quadrilateral MATH onto quadrilateral
M"A"T"H".
Answers
A sequence of transformations that maps quadrilateral MATH onto quadrilateral M"A"T"H" is a rotation of 180° about the origin and a translation by 1 unit left and 1 unit up.
What is a rotation?In Mathematics and Geometry, the rotation of a point 180° about the origin in a clockwise or counterclockwise direction would produce a point that has these coordinates (-x, -y).
Additionally, the mapping rule for the rotation of a geometric figure 180° counterclockwise about the origin is given by this mathematical expression:
(x, y) → (-x, -y)
Coordinates of point M (2, 4) → Coordinates of point M' = (-2, -4)
By applying a translation to the image (M') vertically upward by 1 unit and horizontally left by 1 unit, the new coordinate M" of quadrilateral M"A"T"H" include the following:
(x, y) → (x - 1, y + 1)
M' (-2, -4) → (-2 - 1, -4 + 1) = M" (-3, -3)
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Consider this equation
1/x-1 = | x-2 |
Using three iterations of successive approximation, what is the approximate solution to the equation? Use the graph as a starting point.
A. x ≈ 43/16
B. x ≈ 21/8
C. x ≈ 41/16
D. x ≈ 19/8
Answers
The approximate solution to the equation 1/x-1 = |x-2| after three iterations of successive approximation is x ≈ 5/2 or x ≈ 2.5.
To solve the equation 1/x-1 = |x-2| using three iterations of successive approximation, we will start with an initial guess and refine it using an iterative process.
Given that the equation involves absolute value, we will consider two cases:
Case 1: x - 2 ≥ 0
In this case, |x-2| simplifies to x-2, and the equation becomes 1/(x-1) = x-2.
Case 2: x - 2 < 0
In this case, |x-2| simplifies to -(x-2), and the equation becomes 1/(x-1) = -(x-2).
Now, let's perform the successive approximation:
Iteration 1:
Let's start with an initial guess, x = 2.
Case 1: When x - 2 ≥ 0,
1/(2-1) = 2-2,
1/1 = 0,
which is not true.
Case 2: When x - 2 < 0,
1/(2-1) = -(2-2),
1/1 = 0,
which is not true.
Since our initial guess did not satisfy the equation in either case, we need to choose a different initial guess.
Iteration 2:
Let's try x = 3.
Case 1: When x - 2 ≥ 0,
1/(3-1) = 3-2,
1/2 = 1,
which is not true.
Case 2: When x - 2 < 0,
1/(3-1) = -(3-2),
1/2 = -1,
which is not true.
Again, our guess did not satisfy the equation in either case.
Iteration 3:
Let's try x = 2.5.
Case 1: When x - 2 ≥ 0,
1/(2.5-1) = 2.5-2,
1/1.5 = 0.5,
which is true.
Case 2: When x - 2 < 0,
1/(2.5-1) = -(2.5-2),
1/1.5 = -0.5,
which is not true.
Our guess of x = 2.5 satisfies the equation in Case 1.
Therefore, the approximate solution to the equation 1/x-1 = |x-2| after three iterations of successive approximation is x ≈ 5/2 or x ≈ 2.5.
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The first three steps in determining the solution set of
the system of equations algebraically are shown.
y=x²-x-3
y=-3x + 5
Step
1
2
3
Equation
x²-x-3=-3x+5
0=x²+
+2x-8
0=(x-2)(x+4)
What are the solutions of this system of equations?
O (-2,-1) and (4, 17)
O (-2, 11) and (4, -7)
O (2, -1) and (-4, 17)
(2, 11) and (-4,-7)
Answers
The solutions of the system of equations are (2, -1) and (-4, 17)
The given system of equations is:
y = x² - x - 3
y = -3x + 5
To find the solutions, we need to solve these equations simultaneously.
Set the equations equal to each other:
x² - x - 3 = -3x + 5
Simplify and rewrite the equation in standard form:
x² - x + 3x - 3 - 5 = 0
x² + 2x - 8 = 0
Factor the quadratic equation:
(x - 2)(x + 4) = 0
Now we can solve for x by setting each factor equal to zero:
x - 2 = 0 or x + 4 = 0
Solving for x, we get:
x = 2 or x = -4
To find the corresponding y-values, we substitute these x-values into either of the original equations. Let's use equation 1):
For x = 2:
y = (2)² - 2 - 3 = 4 - 2 - 3 = -1
For x = -4:
y = (-4)² - (-4) - 3 = 16 + 4 - 3 = 17
As a result, the system of equations has two solutions: (2, -1) and (-4, 17).
The right responses are therefore (2, -1) and (-4, 17).
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Using a t-distribution table or software or a calculator, report the t-statistic which is multiplied by the standard error to form the margin of error for the following cases: a. 90% confidence interval for a mean with 8 observations. b. 90% confidence interval for a mean with 18 observations. c. 99% confidence interval for a mean with 18 observations.
Answers
a. The t-value is 1.895.
b. The t-value is 1.734.
c. The t-value is 2.898.
To calculate the t-statistic for a confidence interval, we first need to determine the degrees of freedom (df), which depends on the sample size minus one. We can then use a t-distribution table, software, or calculator to find the t-value at the desired confidence level and degrees of freedom.
a. For a 90% confidence interval with 8 observations, the degrees of freedom is 7. Using the t-distribution table or calculator,
b. For a 90% confidence interval with 18 observations, the degrees of freedom is 17. Using the t-distribution table or calculator,
c. For a 99% confidence interval with 18 observations, the degrees of freedom is 17. Using the t-distribution table, software, or calculator,
Note that as the sample size increases, the degrees of freedom increase and the t-value approaches the value of the standard normal distribution for large sample sizes. This means that for large sample sizes, we can use the z-value instead of the t-value in confidence interval calculations.
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Determine the percentile of 6.2 using the following data set.
4.2 4.6 5.1 6.2 6.3 6.6 6.7 6.8 7.1 7.2
Your answer should be an exact numerical value.
The percentile of 6.2 is |
%.
Answers
The percentile of 6.2 in the given data set is 40%.
To determine the percentile of 6.2 in the given data set, we can use the following steps:
Arrange the data set in ascending order:
4.2, 4.6, 5.1, 6.2, 6.3, 6.6, 6.7, 6.8, 7.1, 7.2
Count the number of data points that are less than or equal to 6.2. In this case, there are 4 data points that satisfy this condition: 4.2, 4.6, 5.1, and 6.2.
Calculate the percentile using the formula:
Percentile = (Number of data points less than or equal to the given value / Total number of data points) × 100
In this case, the percentile of 6.2 can be calculated as:
Percentile = (4 / 10) × 100 = 40%
The percentile of 6.2 in the sample data set is therefore 40%.
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write the standard form of the equation of a circle with radius 2 and )-14,-13).
Answers
Answer:
11? I'm so sorry if it's incorrect. I apologize.
Juan, standing at one focus of a whispering gallery; is 20 ft from the nearest
wall. His friend is standing at the other focus, 80 ft away. How high is its elliptical
ceiling at the center?
Fill in the blank:
The elliptical ceiling is
ft high at the center.
Give your answer to the nearest whole ft (no decimal places).
Answers
The elliptical ceiling is approximately 30 ft high at the center.
To find the height of the elliptical ceiling at the center, we can use the properties of an ellipse.
In this case, the two foci of the ellipse represent the positions where Juan and his friend are standing.
The distance between the two foci is 80 ft, and Juan is 20 ft away from the nearest wall.
This means that the sum of the distances from any point on the ellipse to the two foci is constant and equal to 80 + 20 = 100 ft.
Since Juan is standing at one focus and the distance to the nearest wall is given, we can determine the distance from Juan to the farthest wall by subtracting the distance to the nearest wall from the sum of the distances.
Distance from Juan to the farthest wall = 100 ft - 20 ft = 80 ft.
The height of the elliptical ceiling at the center is equal to half of the distance between the nearest and farthest walls.
Height of elliptical ceiling = (80 ft - 20 ft) / 2 = 60 ft / 2 = 30 ft.
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what is the value of x in the triangle
Answers
Answer:
7
Step-by-step explanation:
In an 30-60-90 right triangle, the longer leg is the shorter leg multiplied by [tex]\sqrt{3}[/tex]
So [tex]7\sqrt{3} =x*\sqrt{3[/tex]
[tex]7=x[/tex]
x=7
Answer:
A. 21
Step-by-step explanation:
This is a 30-60-90 triangle, where you have one 30° angle, one 60°, and one 90° (aka right) angle.
The sides of a 30-60-90 triangle adhere to the following rules:
The side opposite the 30° angle is the shortest side and we can call its length "x".The side opposite the 60° angle is the medium length side and its length is given by x * √3. This means its length is the product of the length of the side opposite the 30° angle and √3.The side opposite the 90° (right) angle is the longest side (aka the hypotenuse) and its length is given by 2x. This means its length is twice the length of the side opposite the 30° angle.Since 7√3 is the length of the side opposite the 30° angle, the entire expression represents x.
Since the length of the side opposite the 60° angle is given by x * √3, the length of this side is (7√3)(√3).
Simplifying gives us 7*3, which is 21.
Thus, the value of x in the triangle is 21 (answer choice A.)
Find the area of the triangle below.
Be sure to include the correct unit in your answer.
15 ft
5 ft
22 ft
Answers
Answer:
What is the base, height? Is it a right triangle?