Step-by-step explanation:
![(x - 8) \: (x + 9) \\ \\ x \times x + 9x - 8x - 8 \times 9 \\ \\ {x}^{2} + 9x - 8x - 72 \\ \\ {x}^{2} + x - 72](https://tex.z-dn.net/?f=%28x%20-%208%29%20%5C%3A%20%28x%20%2B%209%29%20%5C%5C%20%20%5C%5C%20x%20%5Ctimes%20x%20%2B%209x%20-%208x%20-%208%20%5Ctimes%209%20%5C%5C%20%20%5C%5C%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%209x%20-%208x%20-%2072%20%5C%5C%20%20%5C%5C%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%20x%20-%2072)
The expression is
50h+25
50 times the number of hours, "h"
25 representing the one time service fee
Answer:
Step-by-step explanation:
2p/2 = 2x+7
1) 2x+7 -x - 5 =
width = x + 2
2) 2p/2 = 21 in
x + 5 + x + 2 = 21
2x = 14
x = 7
lenght = 7 + 5 = 12 in
width = 7 + 2 = 9 in
3 )
A = (x+5)(x+2)
4)
A = 12 x 9 = 108
9514 1404 393
Answer:
8/11 minutes
Step-by-step explanation:
To find the time, divide the quantity by the rate:
(200 rev)/(275 rev/min) = (200/275) min = 8/11 min
The wheel rotated for 8/11 minutes.