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Anna [14]
2 years ago
12

Convert the following sentence into an algebraic expression: a number increased by 5

Mathematics
1 answer:
Sloan [31]2 years ago
5 0

Answer:

x + 5

Step-by-step explanation:

Let x be the unknown number. Increased means adding, so you add 5 to the unknown number.

Resulting in x + 5

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B 1/2

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Ms. Merry spent a total of $33.42 to buy 6 books. Each book was the same price. Which expression should be used to estimate the
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33.42 divided by 6?

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3 years ago
In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

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Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

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z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

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6 0
3 years ago
Sherry has a package in the shape of a rectangular prism. What is the volume, in cubic inches (in.), of the rectangular prism? (
Rudiy27

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the dimension of the prism is not given. However, the following steps can serve as a guide for you.

The volume of a rectangular prism is calculated as thus:

Volume = Length * Width * Height

So, Take for instance

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Width = 3\ in

Height = 4\ in

The Volume would be:

Volume = 2\ in * 3\ in * 4\ in

Volume = 24\ in^3

7 0
3 years ago
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