Answer:
65 m
Step-by-step explanation:
u = 6 m/s
v = 20 m/s
t = 5 s




Answer:
The numbers of measure of music played are 1 and 7
Step-by-step explanation:
Given

Required
Solve for x when s = 80
Substitute 80 for x

Subtract 50 from both sides


Divide through by 10


Reorder

This can be split into
or 
Solve for x
or 
or 
Hence:
<em>The numbers of measure of music played are 1 and 7</em>
Pythagorean Theorum since that is what you are trying to prove.
3/4 *x-4
3/4 x 3/4 x 3/4 x 3/4
3 13/81