Answer:
Step-by-step explanation:
1. because U is between T and B
TU +UB = TB
2x+3x+1 =21
5x = 20
x= 4
mTU = 2x = 2*4 = 8
mUB = 3x+1 = 3*4 +1 = 12 +1 = 13
2.
m∠JKL = 59°
m∠MKL + m∠JKM = m∠JKL
5x+7 +2x+10 = 59
7x +17 = 59
7x = 59-17
x = 42/7 = 6
m∠MKL=5x+7 = 5*6 +7 = 30+7 = 37°
