Answer:
4.5 i believe correct me if i'm wrong
Step-by-step explanation:
2 3/4a=19 1/4
÷2 3/4 ÷2 3/4
a=1/7
Answer:
x = 28
Step-by-step explanation:
The sum of the angles in a straight angle = 180°
Sum the angles and equate to 180
2x + 20 + 3x + 20 = 180
5x + 40 = 180 ( subtract 40 from both sides )
5x = 140 ( divide both sides by 5 )
x = 28
