Answer:


Step-by-step explanation:
Perimeter of the trapezoid-shaped window = sum of all the sides of the window frame
Thus, the equation to find the unknown side length, x, would be:
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Solve for x

Subtract 14.89 from each side

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Answer:
6
Step-by-step explanation:
Don't let the variable confuse you. Replace n with 9. Then, subtract 9 from 15.
Answer: 4.123 (rounded) or sqrt(17)
Step-by-step explanation: Take the square root of 17.
-7 * 12 = -84
but
-7 + 12 = 5