Me on this equation! equation practice with angles..

x = 18, ∠A = 166°

Step-by-step explanation:

The relationship between ∠A and ∠B is that they are corresponding angles, which means they are congruent (equal).

   ∠A    =    ∠B

7x + 40 = 3x + 112

4x + 40 =         112           subtracted 3x from both sides

4x         =          72           subtracted 40 from both sides

 x         =  18                    divided both sides by 4

∠A = 7x + 40

    = 7(18) + 40

    = 126 + 40

    = 166

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: