3 years ago

-25=-5/9v solve for v

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

6 0

Answer: v = 18

hope i help you

plz give me a hart

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2 years ago

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Mark’s Clothing store buys shoes for $20 and sells them for $70. Calculate the percent increase that the store charges.

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Which expression is equivalent to the square root of -80?

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Step-by-step explanation:

Likely a list of answers should be provided. There are all kinds of possible answers (well 2 perhaps).

Begin by factoring 80 into prime factors.

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For ever pair of 2s, one can be taken outside the square root sign. The other one just disappears.

sqrt(80) = sqrt(2 * 2 * 2 * 2 * 5)

For every pair 2 is taken out of the root sign and the other forgotten

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There is no real number that can be written as the sqrt(-1). So a number has been defined into existence. sqrt(-1) = i It's a definition, not a real number.

So the end result is sqrt(-80) = 4sqrt(5)i

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