4x -2y = 2
2x +2y = 16

x = 3

y = 5

Step-by-step explanation:

we can add these equations together

4x - 2y +2x + 2y = 18

6x = 18

x = 3

to find y

6 + 2y = 16

2y = 10

y = 5

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

part a: 1.08

part b: 27.59