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Dima020 [189]
2 years ago
6

15. What is the area of the circle whose equation is (X - 9)2 + (y - 3)2 = 64?

Mathematics
1 answer:
Vsevolod [243]2 years ago
3 0

Answer:

64π

General Formulas and Concepts:

<u>Geometry</u>

Area of a Circle Formula: A = πr²

  • <em>r</em> is radius

<u>Pre-Calculus</u>

Center-Radius Form: (x - h)² + (y - k)² = r²

  • (h, k) is center
  • <em>r</em> is radius

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

(x - 9)² + (y - 3)² = 64

↓ Compare to Center-Radius Form

Center (9, 3)

Radius² = 64

<u>Step 2: Find Area</u>

  1. Substitute in variables [Area of a Circle Formula]:                                         A = π(64)
  2. Multiply:                                                                                                             A = 64π
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Answer:

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Step-by-step explanation:

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Answer:

4√5

Step-by-step explanation:

√80 = √16 times √5

√16 = 4

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3 years ago
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How to solve using substitution<br> y=3/4X+5<br> 4x-3y=-1
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Please, use parentheses to enclose each fraction:
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Let 's now solve the system   

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Then we have 

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Use the position equation given below, where s represents the height of the object (in feet),
mariarad [96]

The answers to the questions are

  • The mathematical model is given as s = −16t2 + 1054
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  • the time it would take to strike the ground is 8.11 seconds.

<h3>How to solve for the position of the object</h3>

The mathematical model of this problem would be written as

s = −16t2 + v0t + s0

s0 = 1054

then we would have

s = −16t2 + 1054

b. after 4.5 seconds the height is going to be

s = −16t2 + 1054

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t² = 1054/16

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t = √65.88

t = 8.11

Hence the time it would take to strike the ground is 8.11 seconds.

Read more on velocity here:

brainly.com/question/4931057

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