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blsea [12.9K]
3 years ago
7

Which expression is equivalent to (53)−2?

Mathematics
2 answers:
Inessa [10]3 years ago
6 0

Answer:

1/5 5 5 5 5 5

Step-by-step explanation:

if this is not the answer i am sorry. please ask someone

faust18 [17]3 years ago
4 0
a^{-n}=\dfrac{1}{a^n}\\(a^n)^m=a^{n\cdot m}\\\\(5^3)^{-2}=5^{3\cdot(-2)}=5^{-6}=\dfrac{1}{5^6}=\dfrac{1}{5\cdot5\cdot5\cdot5\cdot5\cdot5}
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Math problem help please
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Answer:

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Step-by-step explanation:

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1. A notebook costs $5 more than a folder. Greg purchased 3 notebooks and 2 folders and paid a total cost $30. What is the cost
stiv31 [10]
Answer
Notebook each =$4
Folder each = $9

First we write out what we know
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It says a notebook is +5 than a folder so
f = n +5
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3n + 2f = 30

Because we know from the first equation
f=n+5, we can substitute that into the second equation for f

3n + 2(n+5) = 30
3n + 2n +10 =30. Now Combine like terms
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Now we do the same thing to find f
We substitute the value of n (4) into the equation 3n + 2f =30
3(4) +2f =30
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We check our work by inserting the n and f values we found into one of the equations
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Answer:

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Step-by-step explanation:

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