Answer:
8
Step-by-step explanation:
x(x+6)/2=56
x^2(6x)=112
x^2(6x)-112=0
By trial and error, we can try base =1, height = 7, etc
base =8
height = 14
a. x=5
The Fraction is
10/x=2
The unknown from the fraction is x
We need to find the value of the unknown
Cross product
We have,
10=2x
Divide both sides by 2
10/2=2x/2
5=x
x=5
Answer is a. x=5
Check
10/5=2
0, 17
3 1/2, 5
<u>-3 1/2, -12</u>
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