Answer:
Your answer:
6. x = 8
8. x = 3
Explanation:
Basic calculation involving adding/subtracting and multiplying and dividing.
Formula for Area of a Rectangle:
Area = Length * Width.
6. Given information
A = 165 cm^2
length = 4x + 1
width = 5
(4x + 1) * 5 = 165 cm^2
5 * (4x + 1)= 165
20x + 5 = 165
20x = 160
x = 8
8. Given information
A = 40 cm^2
length = 7x - 1
width = 2
(7x - 1) * 2 = 40 cm^2
2 * (7x - 1)= 40
14x - 2 = 40
14x = 42
x = 3