M∠ dab = 85 − 2x
m ∠ abc = 90 + x
m ∠ bcd = 80 − 3x
m ∠ cda = 105 + 4x
quadrilateral abcd is a parallelogram if pairs of consecutive angles are supplementary. prove that quadrilateral abcd is a parallelogram by finding the value of x.
a) x = −2
b) x = −5
c) x =
5
2
d) x = −
5
2

stethere all not eveanp-by-step explanation:

just sum

10 + 10 = 20

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

the radius is 2 times the diameter.

step-by-step explanation: