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2 years ago

What is the reason for each step in the solution of the inequality?

Mathematics

1 answer:

Stolb23 [73]2 years ago

7 0

I think it is givin. But I’m am not 100% sure

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There are 500 toothpicks in a small box. If a jumbo box is made by doubling all the dimensions of the small box, how many toothp

Kisachek [45]

Volume is length x width x height. if you double those it is 2length x 2width x 2 height so you are increasing the volume by 8 times (2x2x2). 8 x 500 = 4000<span> D.) 4,000 Toothpicks
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2 years ago

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There are 20,000 runners in the

SpyIntel [72]

20,000 • 26 = 520,000 miles.

In scientific notation, 520,000 becomes

5.20 x 10^5

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2 years ago

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A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:

marin [14]

Answer:

$Range = 85$

$\sigma = 28.71$

$Interval = [666.78, 781.62]$

Step-by-step explanation:

Given

The data for 25 undergraduates

Solving (a): Range and Standard deviation

The range is:

$Range = Highest - Least$

From the dataset:

$Highest = 772$

$Least = 687$

So:

$Range = Highest - Least$

$Range = 772-687$

$Range = 85$

The standard deviation is:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

First, calculate the mean

$\bar x = \frac{769 +691 +............+715}{25}$

$\bar x = \frac{18105}{25}$

$\bar x = 724.2$

So, the standard deviation is:

$\sigma = \sqrt{\frac{(769-724.2)^2 +(691-724.2)^2 +(699-724.2)^2 +(730-724.2)^2 +............+(715-724.2)^2}{25}}$

$\sigma = \sqrt{\frac{20604}{25}}$

$\sigma = \sqrt{824.16}$

$\sigma = 28.71$

Solving (b): The interval of the 95% of the observation.

Using the emperical rule, we have:

$Interval = [\bar x - 2*\sigma, \bar x+ 2*\sigma]$

$Interval = [724.2 - 2*28.71, 724.2 + 2*28.71]$

$Interval = [666.78, 781.62]$

4 0

2 years ago

WILL MARK BRAINLIEST WILL REPORT IF U GIVE ME A LINK TO UKNOWN THING

meriva

Answer:

I think the answer will be x⩽4

5 0

2 years ago

Find the measure of angle b

galina1969 [7]

Answer:

48. ..........hhshhxhxx

Step-by-step explanation:

180-42-90=48

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2 years ago

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