2 years ago

What is the equation for a circle with r=8 and center (0,-4)

Mathematics

1 answer:

solong [7]2 years ago

3 0

Y=4x+8 because it’s the opposite of negative 4 and the r is 8 so it’s plus 8

You might be interested in

Write an exponential function y = ab" whose graph passes through (2,12) and (5,96).

motikmotik

Answer:

y = 3 $(2)^{x}$

Step-by-step explanation:

Substitute the given points into the function and solve for a and b

Using (2, 12)

12 = ab² → (1)

Using (5, 96)

96 = a $b^{5}$ → (2)

Divide (2) by (1)

$\frac{ab^5}{ab^2}$ = $\frac{96}{12}$ , that is

b³ = 8 ( take the cube root of both sides )

b = $\sqrt[3]{8}$ = 2

Substitute b = 2 into (1) and solve for a

12 = a2² = 4a ( divide both sides by 4 )

3 = a

Thus

y = 3 $(2)^{x}$ ← is the exponential function

3 0

3 years ago

How do I do this delta math question?

KonstantinChe [14]

It does not represent a polynomial

7 0

2 years ago

Factor the expression. r^2 – 49 a. (r – 7)(r 9) b. (r 7)(r 7) c. (r – 7)(r 7) d. (r – 7)(r – 7)

gayaneshka [121]

$r^2-49=r^2-7^2\\\\/use\ a^2-b^2=(a-b)(a+b)/\\\\=\boxed{(r-7)(r+7)}$

6 0

2 years ago

Find the surface area of a cube 5in height 8 in length and 6 in base pls help <br>

victus00 [196]

if its wrong that means you didn't explain it correct tell me if its wrong and ill solve it correctly if you say what's the width, length and height the answer is down below.

Answer: 236 in²

8 0

1 year ago

(MULTIPLE CHOICE QUESTION)

Aloiza [94]

Answer: B

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

What is the equation for a circle with r=8 and center (0,-4)​

What is the equation for a circle with r=8 and center (0,-4)