Answer:
4b+8 = 20
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4b = 20
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b = 5
Step-by-step explanation:
We need to solve for b in the following equation:

When we multiply each term by 2 the denominator cancels out:

Next, we subtract 8:

Final step, we isolate the variable. We cancel the multiplication on the left side when dividing by 4 on each term

We'll use the Pythagorean Theorem
130^2 = side^2 +50^2
side ^ 2 = 16,900 -2,500
side ^ 2 = 14,400
side = square root (14,400)
side = 120 feet
Answer:
8
Step-by-step explanation:
I believe that the answer is 8