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3 years ago

If 30 gallons of water weighs 249 pounds, what is the weight of 7 gallons of water in pounds?

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

6 0

Answer: 58.1 pounds

Step-by-step explanation:

Use proportion to solve peroblem.

30:249=7:x

30x=249*7

x=249*7/30

x=58.1 pounds

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a) To simplify the expression $\left(18+\tan \left(x\right)\right)\left(18-\tan \left(x\right)\right)+\sec ^2\left(x\right)$ you must:

Apply Difference of Two Squares Formula: $\left(a+b\right)\left(a-b\right)=a^2-b^2$

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