Answer:

Step-by-step explanation:
s represents one side of the cube
Volume of cube= (s)^3
= (3x)^3
= 27x^3
Step-by-step explanation:
something is missing. maybe mean, median
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>
×by 2 then find 10%and then times the 10% by 2 then add it on