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.
It makes no difference in which order you mutliply these. You must calculate 15 squared first though. E.G. 1 * 22 * 3 is the same as, for instance, 22 * 3 * 1.
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