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3 years ago

I need help. what is 2e=2

Mathematics

2 answers:

Korolek [52]3 years ago

7 0

Answer:

e=1

Step-by-step explanation:

2e=2

Divide both sides by 2

2e/2=2/2

Simplify

e=1

ANSWERED by NONE other than the #QUEEN herself aka #DRIPPQUEENMO!!

HOPE THIS HELPED!!

marishachu [46]3 years ago

3 0

E=1

Another step:
2e is 2xe, so the opposite of multiplying is dividing.

You could do it another way is to take the 2 from the e and write it under the other 2 as a fraction and there’s the answer. Then you reduce it

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What is the probability a sample of 90 test takers will provide a sample mean test score within 10 points of the population mean

Elena-2011 [213]

Answer:

0.658 is the probability that a sample 90 test takers will provide a sample mean test score within 10 points of the population mean of 502.

Step-by-step explanation:

The following information is missing:

The standard deviation of population is 100.

We are given the following information in the question:

Population mean, μ = 502

Standard Deviation, σ = 100

Sample size, n = 90

Standard error =

$\dfrac{\sigma}{\sqrt{n}} = \dfrac{100}{\sqrt{90}} = 10.54$

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(test score within 10 points)

$P(492 \leq x \leq 512) \\\\= P(\displaystyle\frac{492 - 502}{10.54} \leq z \leq \displaystyle\frac{512-502}{10.54}) \\\\= P(-0.9487 \leq z \leq 0.9487)\\= P(z \leq 0.9487) - P(z < -0.9487)\\= 0.829 -0.171 = 0.658 = 65.8\%$

$P(492 \leq x \leq 512) = 65.8\%$

0.658 is the probability that a sample 90 test takers will provide a sample mean test score within 10 points of the population mean of 502.

7 0

3 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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The number of miles in the taxi ride is 6.22 miles.

It is required to find the number of miles in the taxi ride.

<h3>What is arithmetic?</h3>

The branch of mathematics dealing with the properties and manipulation of numbers. a science that deals with the addition, subtraction, multiplication, and division of numbers. Fractions, decimals, percentages, fractions, square root, exponents, and other arithmetic operations are used to achieve mathematical simplifications.

Given that:

The taxi company charged a pick-up fee of $1.60 for half distance.

The taxi company charged a pick-up fee of $1.75 for another half distance.

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So, the equation will be,

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x=20.85/3.35

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1 year ago