3 years ago

(3n)^3 without exponents

Mathematics

1 answer:

aniked [119]3 years ago

7 0

It will be 3n x 3n x 3n

hope this helps

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For this case we have the following equation:
$3 \sqrt{x+6}=-12$
Rewriting we have:
$\sqrt{x+6}= \frac{-12}{3}$
$\sqrt{x+6}=-4$
We raise both members of the equation to the square:
$(\sqrt{x+6})^2=(-4)^2$
Rewriting we have:
$x+6=16$
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It's a extraneous solution because equality is not met by substituting x = 10 in the original equation:
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Answer:
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A train traveled 63.75 miles at a rate of 85 miles per hour. Which equation can be used to find h, the number of hours it took t

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Answer: 63.75 = 85h

Solving gives 0.75 hours.

Step-by-step explanation:

we now that speed = distance / time

therefore time will be Distance / speed

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