3 years ago

Simplify the radical expression by rationalizing the denominator.

Mathematics

1 answer:

artcher [175]3 years ago

4 0

$\frac{4}{\sqrt{21}} = \frac{4}{\sqrt{21}} \times \frac{\sqrt{21}}{\sqrt{21}} =\boxed{ \frac{4\sqrt{21}}{21}}$

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julia-pushkina [17]

Answer: a). 1/8

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2 years ago

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4 years ago

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3 years ago

I need some answers plzz 90=-105+x

leonid [27]

Hey there!

Answer:

x = 195

Explanation:

So here is your equation:

90 = -105 + x

First, you simplify both sides of the equation:

90 = x - 105

Then, you will have to turn it around:

x - 105 = 90

So after you do that, you will have to Add the 105 to both sides:

x - 105 + 105 = 90 + 105

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So 195 is your answer.

Hope this helps! :D

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3 years ago