Question

Please do number 18 for me.

Answer 1

Explanation:

angle S + angle W + angle STW = 180

(7x + 6) + (7x + 1) + angle STW = 180

So angle STW = 180 - (7x + 6) - (7x + 1)

angle STW + angle STP = 180 (straight angle = 180)

180 - (7x + 6) - (7x + 1) + angle STP = 180

angle STP = 180 - 180 + (7x + 6) + (7x + 1)

= 7x + 6 + 7x + 1

= 14x + 7

15x = 14x + 7

x = 7

angle STP = 15x = 15(7) = 105