Kimberly receives her birthday gift: window decals of birds for spring! She puts a few on the living room window and really likes the way they look. She wants to do the exact same design on another window, so she measures the angles of where the branch meets the windowsill (the windowsill is a straight line).
What is the measure of x?

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).