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sergey [27]
4 years ago
8

Please help must equal 180 Solve for x. x = [?] 2x + 9 8x + 1

Mathematics
1 answer:
Basile [38]4 years ago
8 0
X=1 1/3 is that helpful because I don’t know if it’s right
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75 minutes

Step-by-step explanation:

The rate at which the tank is filled up, F, and emptied, E, are respectively:

F=\frac{V}{30}*60 = 2V/hour\\E=\frac{V}{50}*60 = 1.2V/hour

Since V is the full volume of the tank, the time required to fill the tank if both pipes are open is given by:

F-E=2V/hour-1.2V/hour = 0.8V/hour\\t= \frac{1}{0.8}=1.25\ hours = 75\ minutes

It will take 75 minutes to fill the tank if both pipes are open.

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Find the slope of the line x = -24.​
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