20 points . Find the geometric mean of 5/4 and 80
1 answer:
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Answer:
21) x = 0
23) x = 7
Step-by-step explanation:
In a parallelogram, the opposite sides are congruent. Using this fact, we can create equations for both problems.
21)
Subtract 18.
Divide by 2.
23)
Add 3.
Divide by 2.
Take 
. Then 
for all 
, but 
doesn't exist.