3a) Answer: 84 degrees
Step-by-step explanation:
3x + 2(x+20)= 180 (total sum of angles in a triangle is 180 degrees)
5x+40 = 180
5x = 140
x= 28
3x= 28 x 3
= 84
<span>The mean of tree heights at Yard Works is 7 feet The mean of tree heights at Yard Works is 8 feet The mean of tree heights at The Grow Station is 9 feet The mean of tree heights at these are the correct answers
</span>
Answer:
10 cm
Step-by-step explanation:
Because it is a parrallogram and by its property it will be 10
100%/x%=80/20
(100/x)*x=(80/20)*x - we multiply both sides of the equation by x
100=4*x - we divide both sides of the equation by (4) to get x
100/4=x
25=x
x=25
