Answer:
A
Step-by-step explanation:
...
Answer:
B.) 
Step-by-step explanation:
use the slope rule

Fill in values

Simplify

Simplify further

Done.
Answer:
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Step-by-step explanation:
Answer:
n = 36
Step-by-step explanation:
54 is a midsegment and is one half the measure of the third side, that is
3n = 2 × 54 = 108 ( divide both sides by 3 )
n = 36
Bh + hr = 25
you can factor out an h from the left side of your equation:
h(b + r) = 25 ... divide both sides by h
b + r = (25/h) ... subtract r
b = (25/h) - r