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Elenna [48]
3 years ago
13

A pizza has a circumference of 12 inches. Find the exact area of the pizza. Use 13.4 for pi.

Mathematics
1 answer:
denis-greek [22]3 years ago
4 0

Answer: 113.04

Step-by-step explanation:

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Use cubic regression to find a function that fits the following points.
8090 [49]

Answer:

y = 2x³ + x² - 4x + 6

Step-by-step explanation:

General formula:

y = ax³ + bx² + cx + d

If you replace point (0, 6) in the general formula, you get:

6 = a(0)³ + b(0)² + c(0) + d

6 = d

If you replace points (-1, 9), (1, 5) and (2, 18) in the general formula, you get the following system of equations:

9 = a(-1)³ + b(-1)² + c(-1) + 6

9 = -a + b - c + 6     (eq. 1)

5 = a(1)³ + b(1)² + c(1) + 6

5 = a + b + c + 6     (eq. 2)

18 = a(2)³ + b(2)² + c(2) + d

18 = 8a + 4b + 2c + 6     (eq. 3)

Adding equation 1 to equation 2:

14 = 2b + 12

(14 - 12)/2 = b

b = 1

Multiplying equation 1 by 2:

18 = -2a + 2b - 2c + 12     (eq. 4)

Adding equation 4 to equation 3, and replacing with b value:

36 = 6a + 6b + 18

36 = 6a + 6 + 18

(36 - 6 - 18)/6 = a

a = 2

Replacing a and b values in equation 1:

9 = -2 + 1 - c + 6

c = -2 + 1 + 6  - 9

c = -4

8 0
3 years ago
Read 2 more answers
What is true about the image ΔQ'R'S'? Select three options.
sergij07 [2.7K]

Answer:

D_{O,2} (x,y) = (2x, 2y)

Side Q'S' lies on a line with a slope of -1.

The distance from Q' to the origin is twice the distance from Q to the origin.

Step-by-step explanation:

The explanations are as follows

As we can see from the attached figure that the ΔQ'R'S' is dilated i.e transformation is made or change in size

Now

Based on

(x,y) = (2x,2y)

The intercepts are as follows

For S

(-1,1)  = (-2,2)

For Q

(-3,3) = (-6,6)

For S

(2,4) = (4,8)

Based on this we can say that the three above options are correct

8 0
3 years ago
Read 2 more answers
Divide a circle into 8 parts and what is the angle
guajiro [1.7K]
1/8x3.14x14 feet= 5.498 feet.

Answer: 5 feet, 5.97inches.
4 0
3 years ago
1. The ratios of the measures of the angles of a triangle are 3:4:11. What is the measure of the largest angle?
lora16 [44]

Answer:

1. 110 degrees.

2.  276 students.

Step-by-step explanation:

1.  Converting the ratios to fractions:

3 + 4 + 11 = 18  so the largest angle is 11/18 of 180 degrees.

Answer is 180 *  11/ 18 = 110 degrees.

2.   That would be 460 * 36 / 60

= 276 students.

7 0
3 years ago
Solve the equation:<br> 9 = 4t
Leona [35]

9=4t

9/4=t

t=9/4

t=9/4

t=9/4

t=9/4

t=9/4




6 0
3 years ago
Read 2 more answers
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