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3 years ago

for the school play four rows of chairs are set up there are 22 chairs in each row how many chairs are in all

Mathematics

2 answers:

allsm [11]3 years ago

7 0

There are about 88 chairs in all.
All you have to do is 22x4 which equals 88. :)

alexandr1967 [171]3 years ago

4 0

There are 88 chairs in total.

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3 years ago

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Solve this problem ...

shusha [124]

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2 years ago

In Exercises 6 and 7, use the given measure to find the missing value in each data set. 6. The mean of the ages of 5 brothers is

strojnjashka [21]

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For this case we can do this:

12, 16,__, 14, 8, 7

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1 year ago

insurance company checks police records on 559 accidents selected at random and notes that teenagers were at the wheel in 91 of

ss7ja [257]

Answer: $(13.22\%,\ 19.34\%)$

Step-by-step explanation:

Given : Sample space : n= 559

Sample proportion : $\hat{p}=\dfrac{91}{559}=0.162790697674\approx0.1628$

$=16.28\%$

Significance level : $\alpha= 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Confidence level for population proportion:-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.1628\pm (1.96)\sqrt{\dfrac{0.1628(1-0.1628)}{559}}\\\\=0.1628\pm0.030604971367\\\\\approx 0.1628\pm0.0306=(0.1322,\ 0.1934)=(13.22\%,\ 19.34\%)$

Hence, 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.= $(13.22\%,\ 19.34\%)$

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3 years ago

When 0.5 and the number n are multiplied the result is 2.5 what is the value of n

tresset_1 [31]

first form an equation to solve the problem

<em>bring 0.5 over to the other side and divide it by 2.5</em>

<em>the answer is </em>

<em>so,</em>

hope that helps :)

8 0

3 years ago