Question

7. Find the perimeter of the triangle with the side lengths of x+14, -X+7, and x-9.

(2 Points)

8. Find the area of a rectangle with the following measurement:
(2 points)
length = 3x² - 6x + 5 and width = 5x - 8

Answer 1

7. X+12
8. 3x^2+19x-8

Answer 2

7. Perimeter = x+12

8. Area = 3x² +19x-8

Explanation:

Perimeter -To calculate the perimeter of a triangle, add the length of its sides. For example, if a triangle has sides a, b, and c, then the perimeter of that triangle will be P = a + b + c.

Area -The area A of a rectangle is given by the formula, A=lw, where l is the length and w is the width.