Answer:
150 m at 10 m/s
350 m at 50 m/s
Step-by-step explanation:
x + y = 500
x/10 + y/50 = 22
~~~~~~~~~~~~~~~~~
x + y = 500
5x + y = 1100
~~~~~~~~~~~~~~~~
x + y = 500
-5x - y = -1100
-4x = -600
x = 150
y = 350
Answer:
Step-by-step explanation:
-3 is less than 0, so you are going to use 
.
Plug in values:
Answer:
speed of the boat = 100 mph
Step-by-step explanation:
Let x = speed of the boat
upstream speed = x - 4
downstream speed = x + 4
time = 24/(x - 4) = 26/(x + 4)
Cross multiply:
24(x + 4) = 26(x - 4)
24x + 96 = 26x - 104
104 + 96 = 26x - 24x
200 = 2x
x = 100 mph
Answer: The answer to 5x-2 is 8.
Step-by-step explanation: If x=2, then 5x means 5x2. 5x2 is 10. 10-2 is 8.
5x - 2
(5 x 2) - 2
10 - 2
<u>8</u>
