5. which equation is of a circle that has a center at (3,-2) and a radius of 9? a (x + 3)2 + (y - 2)2 = 9 b (x + 3)2 + (y - 2)2 = 81 c (x - 3)2 + (y + 2)2 = 9 d (x - 3)2 + (y + 2)2 = 81

Step-by-step explanation:

The standard form of an equation of a circle:

(h, k) - center

r - radius

We have the center at (3, -2) and the radius r = 9. Substitute:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube