Three times the sum of a number and seven is two less than five times the number.
1 answer:
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Answer:
<h2>A = 3x²</h2>Step-by-step explanation:
The formula fo an area of a triangle:
b - base
h - height
We have
x - base
6x - height
Substitute:
Answer:
Step-by-step explanation:
We have the following function:
And we have to evaluate it when , this means we have to substitute
by
:
Solving:
Finally: