Question

Need help with this questions please.

Answer 1

Below

Explanation:

Angle on a straight line =180

`40\° + (15x +20)\°=180\°\\\\40 \°+(15(8)+20)\° =180\°\\\\40\°+(120+20)\°=180\°\\\\40\°+140\°=180\°\\\\180\°=180\°`

Answer 2

Answer: x=8

Explanation:

15*8 = 120 + 20 = 140

140+40 = 180 a perfect line