Find the measure of ∠b if ∠a = 5/2 x + 16 ∠b = 7/2 x + 20 ∠c = 3/2 x + 68 ∠d = 3/2 x + 40

Answer

b = 104

Step-by-step explanation:

A + B + C + D = 360

after sum

360 = 9x + 144

so

x = 24

then

B = (7/2) 24 + 20

B = 104

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.

step-by-step explanation:

mean or average is 40.6