Answer a because...................
6.2^2 + b^2 = 8.7^2
38.44 + b^2 = 75.69
b^2 = 37.25
b ≈ 6.1
Simplifying
4.5x + -7 = 20
Reorder the terms:
-7 + 4.5x = 20
Solving
-7 + 4.5x = 20
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 4.5x = 20 + 7
Combine like terms: -7 + 7 = 0
0 + 4.5x = 20 + 7
4.5x = 20 + 7
Combine like terms: 20 + 7 = 27
4.5x = 27
Divide each side by '4.5'.
x = 6
Simplifying
x = 6
9514 1404 393
Answer:
- length: 24 ft
- width: 42 ft
Step-by-step explanation:
The area is the product of length and width. If L represents the length, then the width is (2L -6), and the area is ...
L(2L -6) = 1008
L² -3L -504 = 0 . . . . . divide by 2, put in standard form
(L -24)(L +21) = 0 . . . . factor
L = 24 . . . . makes the first factor zero
W = 2L -6 = 2(24) -6 = 42
The length of the rectangle is 24 feet; the width is 42 feet.
