Identify the radius and the center of a circle whose equation is (x – 5)² + y² = 81.

Hello there,

In order to solve this problem we need to write down the original circle equation:

From this equation you should note that (h, k) as the center of the circle and the r being the radius.

Now let's take a look at the equation given to us:

From this you know that the center of the circle is at (5, 0). As for the radius you have to take the square root of 81 which is 9.

This circle has the center at (5, 0) and the radius at 9.

Hope I helped,

Amna

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.