15'x15' is 225 square feet; so I would figure on 225 tiles. I would get a few extras in case some crack.
24
-15x=-5*3x+2 -15x=-15x+2 +15x +15x ----------------- 0=2
Suppose the height is 15x cm. Then the width is 8x cm. Then the surface area is 2*(15x*8x + 8x*22 + 22*15x) cm2 Therefore 2*(15x*8x + 8x*22 + 22*15x) = 2506 or 15x*8x + 8x*22 + 22*15x = 1253 120x2 + 506x - 1253 = 0 so that x = -529/30 or 13/4 But x cannot be negative so x = 1.75. Therefore, volume = (15*1.75)*(8*1.75)*22 = 8085 cm3
35x + 15x = 50x
15x-16x = -1
-9y-15x ---- -3
225x
The GCF is 15x.
4
GCD(15x, 24x) = 3x
5x-15x+10 = 10-10x when simplified Assuming a request to solve the equation: 5x -15x + 10 = 0 5x - 15x + 10 = 0 5x - 15x = -10 or (multiplying everything by -1 gives you -5x + 15x = 10) so 15x - 5x = 10 10x = 10 x =1
hmm it would be -15x+12-8 so on this problem you just simplfy it would be -15x+4