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lisov135 [29]
3 years ago
7

How to do i do this please help:)

Mathematics
2 answers:
Mariana [72]3 years ago
4 0

Answer:

i cant read that,

Step-by-step explanation:

tresset_1 [31]3 years ago
3 0
What does the top say?
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lisov135 [29]
Your answer should be 60%, but I'm not sure.
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What is the value of this expression when a = 3 and b = -2?
weqwewe [10]

The first step: Simplify the expression with:

\dfrac{x^n}{x^m}=x^{n-m}\\\\(xy)^n=x^ny^n\\\\(x^n)^m=x^{nm}\\\\x^{-n}=\dfrac{1}{x^n}

\left(\dfrac{3a^{-2}b^6}{2a^{-1}b^5}\right)^2=\left(\dfrac{3}{2}a^{-2-(-1)}b^{6-5}\right)^2=\left(\dfrac{3}{2}a^{-1}b^1\right)^2\\\\=\left(\dfrac{3}{2}\right)^2(a^{-1})^2b^2=\dfrac{9}{4}a^{-2}b^2=\dfrac{9b^2}{4a^2}

The second step: Put the values of a = 3 and b = -2 to the expression:

\dfrac{9(-2)^2}{4(3)^2}=\dfrac{(9)(4)}{(4)(9)}=1

<h2>Answer: 1</h2>
4 0
4 years ago
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How can I do 30-4 as a mixed number
sertanlavr [38]
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Hope this helps
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Should be

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D is the correct answer
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