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rosijanka [135]
3 years ago
7

I need help on that question ​

Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
7 0

Answer:

<em> </em><em>8</em><em>0</em><em>√</em><em>3</em>

Step-by-step explanation:

<em>here's </em><em>your</em><em> solution</em>

<em> </em><em> </em><em> </em><em>=</em><em>></em><em> </em><em> </em><em>First</em><em> </em><em>number</em><em> </em><em>is </em><em>4</em><em>√</em><em>5</em>

<em> </em><em> </em><em>=</em><em>></em><em> </em><em>Second</em><em> </em><em>number</em><em> is</em><em> </em><em>4</em><em>√</em><em>1</em><em>5</em>

<em> </em><em> </em><em> </em><em>=</em><em>></em><em> </em><em>we </em><em>need</em><em> to</em><em> find</em><em> </em><em>product</em>

<em> </em><em> </em><em>=</em><em>></em><em> </em><em>4</em><em>√</em><em>5</em><em>*</em><em>4</em><em>√</em><em>1</em><em>5</em>

<em> </em><em> </em><em> </em><em>=</em><em>></em><em> </em><em>4</em><em>*</em><em>4</em><em> </em><em>=</em><em> </em><em>1</em><em>6</em>

<em> </em><em> </em><em> </em><em> </em><em>=</em><em>></em><em> </em><em>√</em><em>5</em><em>*</em><em>√</em><em>1</em><em>5</em><em>. </em><em>=</em><em> </em><em>√</em><em>7</em><em>5</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>></em><em> </em><em>√</em><em>7</em><em>5</em><em> </em><em>=</em><em> </em><em>5</em><em>√</em><em>3</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>></em><em> </em><em>now,</em><em> </em><em>multiple</em><em> </em><em>5</em><em>√</em><em>3</em><em>*</em><em>1</em><em>6</em><em> </em><em>=</em><em> </em><em>8</em><em>0</em><em>√</em><em>3</em>

<em>hope</em><em> it</em><em> helps</em>

Anika [276]3 years ago
3 0

Answer:

the required answer is

80 \sqrt{3}

Step-by-step explanation:

here's the solution : -

=》

4 \sqrt{5}  \times 4 \sqrt{15}

=》

4 \sqrt{5}  \times 4 \sqrt{5}  \times  \sqrt{3}

=》

4 \times 4 \times 5 \times  \sqrt{3}

=》

80 \sqrt{3}

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aivan3 [116]
Yes the answer would be 6. all you would have to do is divide 3 by 4 and get .75 then you will multiply .75 by 8
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2 years ago
6. (4.11.2) A 500-page book contains 250 sheets of paper. The thickness of the paper used to manufacture the book has mean 0.08
Maksim231197 [3]

Answer:

10.38% probability that a randomly chosen book is more than 20.2 mm thick

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are 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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For sums of n elements, the mean is n\mu and the standard deviation is s = \sqrt{n}\sigma

In this problem, we have that:

\mu = 250*0.08 = 20, \sigma = \sqrt{250}*0.01 = 0.1581

What is the probability that a randomly chosen book is more than 20.2 mm thick (not including the covers)

This is 1 subtracted by the pvalue of Z when X = 20.2. So

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

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{20.2 - 20}{0.1581}

Z = 1.26

Z = 1.26 has a pvalue of 0.8962

1 - 0.8962 = 0.1038

10.38% probability that a randomly chosen book is more than 20.2 mm thick

3 0
2 years ago
2log2 8 – 3 logs 25 + 2x = log 10,000<br> may you show the steps please
anzhelika [568]

Answer: x=2 - 1/2 x ㏒(16/2953125)

Step-by-step explanation:

  • log (28^2) + log(525^-3) + 2x=log(10^4)
  • log(28^2 x 1/523^3) + 2x=4
  • log(28^2/525^3) + 2x=4
  • log (112/75 x 75 x 525) + 2x=4
  • log(16/2953125) + 2x=4
  • 2x=4-log(16/2953125)
  • <u><em>x=2-1/2 x log(16/2953125)</em></u>

8 0
3 years ago
Please please help I am stuck and idk I tried so many times.
zhuklara [117]

Answer:

58.8 in^2

Step-by-step explanation:

The area of triangle given two sides and included angle.

8 0
3 years ago
If the area of a rectangle is w^2 - 8w - 9, which of the following could be the side length of the rectangle?
lorasvet [3.4K]

Answer:

w+8 is the length of rectangle

8 0
2 years ago
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