Answer: it will take them 28 minutes to fill the tank.
Step-by-step explanation:
The first pipe alone can fill the tank in 84 minutes. This means that the rate at which the first pipe fills the tank per minute is 1/84
The second pipe can fill the tank in 42 minutes by itself. This means that the rate at which the second pipe fills the tank per minute is 1/42
If they work together, they would work simultaneously and their individual rates are additive. This means that their combined rate of filling the tank would be
1/84 + 1/42
Assuming it takes t hours for both pipes to fill the tank working together, the working rate per minute would be 1/t. Therefore,
1/84 + 1/42 = 1/t
3/84 = 1/t
t = 84/3
t = 28 minutes
2+-2 sq rt of 2 one of the answers you needed plz rate me
Answer:
C) Ø not possible
Step-by-step explanation:
Solve |x| + 7 < 4.
subtract 7 first
|x| < 4 - 7
|x| < -3
this is impossible, a positive number cannot be less than a negative number
you answer it the right way
Answer:
The answer is 17
Step-by-step explanation:
Use the distance formula as shown in the picture. I hope you can make sense of this. Let me know if it doesn't make sense.
