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Helga [31]
3 years ago
7

If you had 28 / 10 dollars how much money would that be in dollars and cents rounded to the nearest penny?

Mathematics
2 answers:
IrinaK [193]3 years ago
7 0
28/10 is 2.80.
So, you’d have $2.80
anyanavicka [17]3 years ago
6 0

$2.80 but if rounded to the nearest penny that would be $3.00. Hope this helps!

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Answer:

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Step-by-step explanation:

a) x^{-3/2}

One of the properties of the exponents tells us that when we have a negative exponent we can express it in terms of its positive exponent by turning it into the denominator (and changing its sign), so we would have:

x^{-3/2}=\frac{1}{x^{3/2} }

And now, solving for x = 9 we have:

\frac{1}{x^{3/2}}=\frac{1}{9^{3/2} }  =\frac{1}{27}

b) y^{4/3}

This is already a positive rational exponent so we are just going to substitute the value of y = 8 into the expression

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c) z^{-3/4}

Using the same property we used in a) we have:

z^{-3/4}=\frac{1}{z^{3/4} }

And now, solving for z = 16 we have:

\frac{1}{z^3/4} } =\frac{1}{16^{3/4} } =\frac{1}{8}

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3 years ago
NEED HELP IMMEDIATELY Which expression is equivalent to one over four n − 16?
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