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Andrej [43]
3 years ago
13

What is the equation of a circle with the center -7, 9 with the radius 2​

Mathematics
2 answers:
Serjik [45]3 years ago
6 0

Answer:

C

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (- 7, - 9) and r = 2, hence

(x - (- 7))² + (y - (- 9))² = 2², thus

(x + 7)² + (y + 9)² = 4 → C

Nataly [62]3 years ago
4 0

centre =(-7,-9)=(h,k)

radius=2

then

the equation of the circle is

(x-h)^2+(y-k)^2=r^2

(x+7)^2+(y+9)^2=2^2

answer is option C.

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If 35% of a number is 17.5, what is 90% of the<br> number?
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Answer:

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Step-by-step explanation:

35%=0.35

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Need help solving this problem ​
natka813 [3]

Answer:

Part 1: \frac{11-x}{5} or \frac{11}{5}-\frac{x}{5}

Part 2: \frac{9}{5}

Step-by-step explanation:

To start things off, you must put everything on the opposite side of y so that you only have the y variable left.

In this case, put x onto the other side, making it negative since it's flipped, so you get 5y=11-x (since the x is negative you're using subtraction from 11).

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