This is the concept of trigonometry, the height of the ramp will be given by:
sin theta=[opposite]/[hypotenuse]
theta=30
opposite=x
hypotenuse=40 ft
hence;
sin 30=x/40
thus;
x=40sin30
x=20 ft
the ramp is 20 ft high
Answer:
The equation would be y=4x-3
Total: $125


The dance comitee could buy 75 balloons.
Answer:
1.25
Step-by-step explanation:
15/12

=

Cross multiply..
1x = 12.8
Divide 1 from both sides

=

x = 12.8
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Let's check our answer now..

=

Cross multiply
12.8 = 12.8
Your answer is 12.8 :)