Need with two questions i am not good with this

Part 12)

Part 13)

Step-by-step explanation:

Part 12) we know that

The equation of a circle in center-radius form is equal to

where

(h,k) is the center of the circle

r is the radius of the circle

In this problem

Looking at the graph

The center is the

The radius is

substitute in the expression above

Part 13) we know that

The measure of the external angle is the semi-difference of the arcs it covers.

so

we have

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.

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue