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4 years ago

$27 for 12 avocados HELP ME PLZ 14 POINTS

Mathematics

1 answer:

Masja [62]4 years ago

6 0

Well, if you are asking how much is for each avocado, then what I did is I divided 27 by 12 and I got 2.25

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Share $55 among for persons equally what would be the answer

zmey [24]

55/4 would be 13.75.

So each person would get $13.75.

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3 years ago

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If f(x) = x^2 — 3x, explain how to find f(—1.8).

gogolik [260]

Answer:

Plug -1.8 into each x so the equation would become (-1.8)^2 - 3(-1.8)

Step-by-step explanation:

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4 years ago

dylan invested $600 in a savings account at a 2% annual interest rate. He made no deposits or withdrawals on the account for 2 y

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He's RICH

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3 years ago

Hannah took p minuets to jog around a park. Sofia took 12 minuets longer to jog around the park. If sofia took t minutes to jog

Sladkaya [172]

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3 years ago

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

3 years ago