Answer:
-1.362637
or if you round your answer -1.36
Step-by-step explanation:
solve for k by simplifying both sides of the equation and isolating the variable.
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
Well if you want to turn an improper fraction to a mixed number you just divide the denominator by the numerator if that's what your asking
Answer:
1. (-20/3)+[(2×3+2)/3]=-12/3=4
2. (-5/3)-(2/3)-3= -5-2-6=-3