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ANTONII [103]
3 years ago
12

Plis help me it’s for today

Mathematics
1 answer:
lisov135 [29]3 years ago
5 0

Answer:

Following are the solution to the given points:

Step-by-step explanation:

For question 1:

\to 3^{-4}= \frac{1}{3^4}=\frac{1}{81}=0.0123456789

For question 2:

\to (-2)^{3}\cdot(-2)^{4}\cdot(-2)^{-1}=-8\cdot-16\cdot -\frac{1}{2}= 128\cdot -\frac{1}{2}=-64

For question 3:

\to 7^{-4} \div 7^{-2}=  \frac{1}{7^{4}} \div \frac{1}{7^{2}}=\frac{1}{7^{4}} \times \frac{7^{2}}{1}=\frac{1}{7^{2}} =\frac{1}{49} =0.0204081633

For question 4:

\to [(-3)^{2}]^3=  (-3)^{2\cdot 3}=  (-3)^{6}=729

For question 5:

\to [5 \cdot (-3)]^{2}=  25 \cdot 9=225

For question 6:

\to [(10 \div 5)]^{3}= [(\frac{10}{5})]^{3}=[2]^{3}=8

For question 7:

\to 10^6 \cdot 10^{-4} \cdot 10^2= 10^6 \cdot \frac{1}{10^{4}} \cdot 10^2=  10^2 \cdot 10^2=10^4=10,000

For question 8:

\to (-4)^{-5}=\frac{1}{(-4)^{5}}=- \frac{1}{1,024}=-0.0009765625

For question 9:

\to \frac{2^3}{2^4}= \frac{8}{16}=\frac{1}{2}=0.5

For question 10:

\to (-6)^3 \cdot (-6)^5 \cdot (-6)^{-5}=   (-6)^3 \cdot (-6)^5 \cdot \frac{1}{(-6)^{5}}=   (-6)^3 =-216

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Answer:

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Step-by-step explanation:

Over here, I'm going to do it in two ways, and either way works, one is just easier to do out:

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2nd way:

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Step-by-step explanation:

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Good evening!

In this question, we were asked to solve for the sales tax of the laptop that Youlanda bought.

We were given:
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