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kramer
2 years ago
12

Rob can mop a warehouse in 10 hours. Maria can mop the same warehouse in 11 hours. Find how long it would take them if they work

ed together.
Mathematics
2 answers:
Natali [406]2 years ago
4 0
The answer would be 21 good luck hope you get it correct
Wittaler [7]2 years ago
3 0

Answer:

It would take them  \frac{110}{21} or approximately 5.24 hours together

Step-by-step explanation:

Use the algebra work formula, \frac{1}{tb} = \frac{1}{t1} + \frac{1}{t2}, where tb is the time together, t1 is the time of one person individually, and t2 is the time of the other person.

Plug in 10 and 11:

\frac{1}{tb} = \frac{1}{t1} + \frac{1}{t2}

\frac{1}{tb} = \frac{1}{10} + \frac{1}{11}

Find the common denominator, then add the fractions together:

\frac{1}{tb} = \frac{11}{110} + \frac{10}{110}

\frac{1}{tb} = \frac{21}{110}

Cross multiply and solve for tb:

110 = 21tb

5.24 = tb

So, it would take them \frac{110}{21} or approximately 5.24 hours together

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Answer:

Step-by-step explanation:

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3 years ago
Which statement is true about the purpose of trend lines in scatterplots? A trend line must pass through the largest data point.
Eddi Din [679]

Answer:

a trend line can be used to make predictions in real-world situations (the third option)

Explanation:

the first & second options are wrong because it is not a requirement for a trend line to pass through any given data point.

the fourth option is wrong because a trend line shows the general upward/downward trend of the data, and may not necessarily touch all of the data points.

the third option is correct because a trend line helps to roughly estimate the trend (hence the name) of the graph, which allows us to make predictions in real-world situations.

i hope this helps! :D

3 0
3 years ago
Read 2 more answers
If Aldo puts 400 into a savings account that paid an interest rate of 5.4 percent What was the total amount in his account at th
Ne4ueva [31]

Answer:

\$421.60

Step-by-step explanation:

we know that

The simple interest formula is equal to

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5 0
3 years ago
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5 0
3 years ago
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lukranit [14]

Answer:

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