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Igoryamba
3 years ago
14

Pls help. I’m begging you.

Mathematics
1 answer:
diamong [38]3 years ago
7 0

Answer:

n=6

Step-by-step explanation:

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84. Use properties of exponents to rewrite each expression with only positive, rational exponents. Then find the numerical value
Yakvenalex [24]

Answer:

a) 1/27

b) 16

c) 1/8

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

y^{4/3}=8^{4/3}=16

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
How to find the surface area and the volume of this prism
kotegsom [21]
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In the first quarter of 2010, U.S. advertisers spent $5.9 billion on online
Katyanochek1 [597]

Answer:

$1.4 B per year

Step-by-step explanation:

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Which inequality represents all values of x for which the product below is<br> defined?<br> 20 pts
timama [110]

Step-by-step explanation:

√a is defined only when a >= 0.

Therefore for √4x * √(x + 2) to be defined, both 4x and x + 2 must be non-negative.

When 4x >= 0, x >= 0.

When x + 2 >= 0, x >= -2.

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3 years ago
The circumference is 15pi centimeters. what is the area of the circle in terms of pi.
Alborosie

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\pi {r}^{2}

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