Answer:
z =
or z = 195.8
y=-30
a = 5
b = -7
x = 64
Step-by-step explanation:
Andrea can cut 4 1/2 (or 4.5) inch pieces from her original piece.
18/4 = 4.5
Hope this helps!
Answer: 
<u>Move all terms to the left</u>
<u></u>
<u></u>
<u></u>
<u>Add all the numbers together, and all the variables</u>
<u></u>
<u></u>
<u></u>
<u>Multiply elements</u>
<u></u>
<u></u>
<u></u>
<u>Move all terms containing d to the left, all other terms to the right</u>
<u></u>
<u></u>
A=(v-u)/t
We know a=2.5, v=40, u=10, so:
2.5=(40-10)/t
2.5t=40-10
2.5t=30
Divide both sides by 2.5
t=12 It takes 12 seconds for the car to reach 40m/s
To find out how far it went, you do:
d=v+1/2 at^2
d=10+1/2(2.5)(12)^2
d=10+1/2(2.5)(144)
d=10+(1.25)(72)
d=10+90
d=100m
Hope this helps :)