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ankoles [38]
3 years ago
7

Suppose a heat exchanger costs $1200 and reduces the heating bill by $200 per year what is the payback time?

Mathematics
1 answer:
natima [27]3 years ago
8 0

6 months is the answer 200×6=1200

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A rectangle has an area of 36 square units. As the length and the width change, what do you know about their product? Is this le
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Area = 36 = length*width

Then, while the area is constant the product length*width is constant.

Length and area are inversely related.

That means that to keep the same product (area), length vary in inverse proportion to width.

If you increase length, widht has to decrease to satisfy this relation:

width = 36/length

Of course, you can also say: length = 36 / width.
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How do I solve this math question? give full explanation using a formula. ​
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Answer:

provided an easy explanation to give answer below

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prime numbers are only divisible by 1 and themselves.

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full list up to 81

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