Answer:
Step-by-step explanation:
It’s c believe me
Answer:
105
Step-by-step explanation:
15 times 7 =105
Answer:
1/12
Step-by-step explanation:
1/2-[-1/4+2/3]
1/2-[-3/12+8/12]
1/2-[5/12]
1/2-5/12
6/12-5/12
1/12
X miles per hour - <span> speed of the boat in still water
(x - 2) - speed up the river
(x + 2) - speed down the river
</span>
![\frac{30}{x - 2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B30%7D%7Bx%20-%202%7D%20)
=
![\frac{38}{x + 2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B38%7D%7Bx%20%2B%202%7D%20)
30 * (x + 2) = 38 * (x - 2)
30x + 60 = 38x - 76
- 8x = - 136
x =
17 miles per hour - <span>
the speed of the boat in still water.</span>