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3 years ago

Please help :/ 20 POINTS

Mathematics

2 answers:

ryzh [129]3 years ago

4 0

25.1 is the answer hope this helps

Dmitry [639]3 years ago

3 0

Answer:

25.1!

Step-by-step explanation:

all you have to do is C=2πr=2·π·4≈25.13274

To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2×radius with pi (π=3.14).

Hope that helped! :)

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What is 5 - 3x + x - 32 in a simplified expression?

tresset_1 [31]

Answer:

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Step-by-step explanation:

5-3x+x-32

(collect like terms)

5-32-3x+x

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3 years ago

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If 3x+2=5/9, what is the value of −3x+8? Group of answer choices

allsm [11]

Answer:

= 4

Step-by-step explanation:

first lets find the value of x in 3x+2=5/9

3x+2=5/9

3x = $\frac{5}{9}$ -2

3x = $\frac{3}{9}$

3x = $\frac{1}{2}$

x = $\frac{1}{2 * 3\\ }$

x = $\frac{1}{6}$

$\frac{1}{6}$ can also be written as $6^{-1}$

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2 years ago

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musickatia [10]

Answer:

1,736.17miles

Step-by-step explanation:

Let the total trip be x miles

If 47% of the total trip is 816, then;

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2 years ago

Add. 3 7/11 + 9 6/11 Write your answer as a mixed number in simplest form. Help

Vilka [71]

Answer:

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Step-by-step explanation:

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kompoz [17]

Answer:

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Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$

Normal probability distribution.

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

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