Answer:

1.x = 14.3

2.38.6

Step-by-step explanation:

the sum of their measure is 90             find one of the angle

m∠1 + m∠3 =90                                 m∠1 = 2x+10

2x+10+4x-6 = 90                                         = 2(14.3) +10

6x+4=90                                                       = 28.6 +10

6x = 90-4                                                       = 38.6

6x = 86

6x/6 = 86/6

x = 14.3

hope it helps . thank u