Answer:
40
Step-by-step explanation:
The sum of measure of exterior angles is equal to 360
5x-20+2x+5+x+15+x = 360 add like terms
9x = 360 divide both sides by 9
x = 40
Answer:
4200
Step-by-step explanation:
4280=(?)+80
So the answer is 4200
2(m-27n) this is the answer
When two lines intersect to form a 90 degree angle, these lines are called perpendicular lines.