22
Call the numbers x and y (x>y) "The difference of two numbers is 15." x - y =15 "Five times the smaller is 9 less than twice the larger." 5y = 2x - 9 From the first equation, y = x-15 Substitute into the second: 5(x-15) = 2x - 9 expand: 5x - 75 = 2x - 9 collect terms: 5x - 2x = 75 - 9 simplify 3x = 66 x = 22 y = x-15 = 22-15 = 7 (x,y) = (22, 7)
5 + 17 = 22 5 x 3 = 15 15 + 2 = 17
1.4667
The area of the floor is (15 x 22) = 330 square feet. The area of the ceiling is also (15 x 22) = 330 square feet. In order to calculate the area of the walls, we'd have to know the height of the ceiling.
What is 15' x 22' in square feet
-29
15 divided by 22 = .68.68 x 100 = 68%
330
Adding 15 percent to 22 gives 22 x 1.15 = 25.3
22
60. 4 = 22 6 = 2 x 3 15 = 3 x 5 lcm = 22 x 3 x 5 = 60
255 = 5 x 51 = 3 x 5 x 17 60 = 2 x 30 = 22 x 15 = 22 x 3 x 5 GCF = 3 x 5 = 15
22' x 15' = 330 square feet.
15*22=330..so 330 lbs?
3 x 5 = 15 2 x 11 = 22 2 x 3 x 5 = 30 2 x 3 x 5 x 11 = 330, the LCM
15 / 100 x 22 = 3.3