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creativ13 [48]
3 years ago
13

Solve the equation a = m - n for the variable n. *

Mathematics
1 answer:
mart [117]3 years ago
3 0

Answer:

n = m-a

Step-by-step explanation:

a = m-n

a+n =m

n = m-a

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First subtract the weight the dog weighs now to the weight he was:

48.9
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Then take the number you got which is the weight the dog gain in total, and divide it by the months the dog gained weight to get the average weight gained each month:


19.2/8 = 2.4

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Muriel can do the laundry in 3 hours working alone. Rea has more experience and can do the laundry in 2 hours working alone. How
vagabundo [1.1K]

Here we have a problem of rates of work, where we want to find the rate at which two people would work together, so we can find the time it takes to complete a given job when these two work together..

We will find that they need to work for 6/5 hours to do the laundry together.

---------------------------------------

We know that:

  • Muriel can do the laundry in 3 hours.
  • Rea can do the laundry in 2 hours.

<em>Then we can define:</em>

  • M = rate at which Muriel works = 1/3h
  • R = rate at which Rea works = 1/2h

Where the rates are computed as the quotient between 1 (1 total laundry completed) and the amount of time it takes to do it.

If they work together, the rate just adds up, so we will have:

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Now we need to write that as a single fraction, so we get:

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Now we can write an equation of the form:

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Where the 1 again, means "one complete laundry done".

Then we have:

(5/6h)*T = 1

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This means that they need to work for (6/5) hours to do the laundry together.

If you want to learn more, you can read:

brainly.com/question/14305692

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