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For the first picture, x = 126 and therefore x - 30 = 96

Second picture:

Step-by-step explanation:

since the sum of the angles is 540°, we can say that

x + x + (x - 30) + (x - 30) + (x - 30) = 540

5x - 90 = 540

5x = 630

x = 126

therefore x - 30 = 96°

2nd picture

we use the same method as we did in the first picture:

5x + 2x + 110 = 180

7x + 110 = 180

7x = 70

x = 10, 5x = 50, 2x = 20

square root

step-by-step explanation:

quit

step-by-step explanation: