Please help me. I don’t know how to do this I really need this answer.

Mathematics

1 answer:

Ainat [17]3 years ago

8 0

The answer is c.
I will explain

p - 2r = q

1. Move variable to the right by adding it’s opposites on both sides

p - 2r + 2r = q + 2r

2. Eliminate the opposites (-2r and +2r)

p = q + 2r

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4. Then Ryan's weigh is:

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6. Then, to calculate the aproximated number of balloons they need to make him float (which can call $n$ ), you must divide the liters of helium needed to lift the weight of Ryan by the volume of a balloon, then the result is: