3 years ago

Does anyone know im not sure lol

Mathematics

2 answers:

mixas84 [53]3 years ago

7 0

Ima say A too. Hope we are right!

DanielleElmas [232]3 years ago

4 0

I think it is a . I know it is not B or c because it is a+3 not a-3.

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A circle is defined by the equation x2 + y2 + 8x + 22y + 37 = 0. What are the coordinates for the center of the circle and the l

inn [45]

We can say that:
8x = -2ax
8 = -2a
a = -4

22y = - 2by
22 = -2b
b = -11

37 = a² + b² - r²
37 = (-4)² + (-11)² - r²
r² = 16 + 121 - 37
r² = 100
r = 10

With all this information, we can say that:
The center of the circle is: (-4 ; -11)
and the radius of the circle is r = 10

P.S:
(a - x)² + (b-y)² = r²
a² - 2ax + x² + b² -2by + y² - r² = 0
x² + y² -2ax - 2by + a² + b² - r² = 0

6 0

3 years ago

Add using a number line. -3/4 + 1 1/4

Andru [333]

Find 1 1/4 on the number line and count back 3/4 (why it is negative) answer is 1/2.

8 0

3 years ago

Read 2 more answers

How do i solve this?

storchak [24]

I hope it help you bye