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Sever21 [200]
2 years ago
10

Write an equation of a circle given the center (-4,4) and radius r=5

Mathematics
1 answer:
Irina-Kira [14]2 years ago
8 0

Answer:

Step-by-step explanation:

Equation of circle: (x - h)² + (y - k)² = r²   where (h,k) is the center.

Center( -4 , 4) and r = 5

(x -[-4])² + (y - 4)²= 5²

(x + 4)² + (y-4)² = 25

x²  + 2*4*x +4²  + y²  - 2*y*4 + 4²  = 25

x²  +8x + 16 + y²  - 8y + 16 = 25

x²  + 8x + y²  - 8y + 16 + 16 -25 = 0

x²  + 8x + y²  - 8y +7 = 0

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Answer:

The player should be required to pay $5 to make this a fair game.

Step-by-step explanation:

U ~ Uniform(0, 10)

E[U] = (0 + 10)/2

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By law of total probability for expectations,

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Therefore the player should be required to pay $5 to make this a fair game.

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3 years ago
What is the constant in the expression 9x3 + 3x2 + 4 + 5x?
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Answer:

4

Step-by-step explanation:

The constant is the lone number, in this case it is 4.

Hope this helps.

7 0
3 years ago
Help please and thanks will mark as brainliest
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