Ineed the right answer ! will give brainliest

what is the measure of the indicated central angle?

a) 10 degrees
b) 20 degrees
c) 30 degrees
d) 40 degrees
e) none of the above

B) 20 degrees

Step-by-step explanation:

Arc length = fraction of the circle * circumference

Arc length = fraction of the circle * 2 * pi *r

pi  = fraction of the circle * 2 * pi *9

pi  = fraction of the circle *18 pi

Divide each side by 18pi

pi

= fraction of a circle

18 pi

1/18 = fraction of a circle

A circle is 360 degrees

1/18 = x/360

Multiply by 360 on each side

360/18 = x

20=x

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice