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4 years ago

Can someone please help me?

Mathematics

2 answers:

barxatty [35]4 years ago

6 0

Answer:

4/10

Step-by-step explanation:

get a common denominator (which is 10) then subtract

andrew11 [14]4 years ago

5 0

Answer:

2/5 so 4/10

THE ANSWER IS A

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3 years ago

What is the value of (2/3)^-4 A. -81/16 B. -16/81 C. 16/81 D. 81/16

Alisiya [41]

For this case, we must find the value of the following expression:

$(\frac {2} {3}) ^ {- 4}$

By properties of powers we have that:

$a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}$

Thus, we can rewrite the expression as:

$\frac {1} {(\frac {2} {3}) ^ 4} =\\\frac {3 ^ 4} {2 ^ 4} =\\\frac {81} {16}$

So, we have to:

$(\frac {2} {3}) ^ {- 4} = \frac {81} {16}$

Answer:

$\frac {81} {16}$

Option D

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3 years ago