Answer:

Step-by-step explanation:
The given expression is:

We expand the parenthesis using the distributive property to obtain;

Recall that;

We apply this property and multiply out the constant terms to obtain;

Ummmmmmm yeah..what is this
Answer:
Step-by-step explanation:
(21²+10²)½ = 23.25= 23.3
Answer:
18/(10-7)+2=8
(48/2)-4^2 +2*2=12
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<span>So there
are 33 boys who tried out for track. And this is 27.5 % of the total boys. And there
15% of the girls who tried out for the track. And in total 22.5 % of the total
population tried out for track</span>