Question

Can someone help me with this please?

Answer 1

x = 35°

Explanation:

A straight line has an angle of 180 degrees.

Both the 40 degrees's add up to 80, subtract that from 180 and your missing 100.

Meaning (2x + 30)° must equal 100.

2x + 30 = 100 Subtract both sides from 30

2x = 70 Divide both sides from 2 to isolate the variable

x = 35°

Answer 2

x= 35

Explanation:

40+40=80

2(x)+30=100