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3 years ago

I need help desperitly

Mathematics

1 answer:

topjm [15]3 years ago

8 0

Number one is 12. There is 12 cubes.

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WILL GIVE 30 points. The GRE is an entrance exam that many students are required to take in order to apply to graduate school. I

Afina-wow [57]

Answer:

The answer is 0.0228. Have a good day!

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3 years ago

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Pls help me nobody ever wants to 6th grade math

weqwewe [10]

Answer:

The average number of students in kindergarten classes is 21.

Step-by-step explanation:

To do this, just add them up and divide by the total number (which is 10).

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2 years ago

Determine the value of a. <br> a+22=-86<br><br> plz show how u got your answer

Whitepunk [10]

Answer:

a=-108

Step-by-step explanation:

a+22=-86 both sides -22

a+22-22=-86-22

a=-108

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3 years ago

Previous Question Question 14 of 20 Next Question A company randomly surveys 15 VIP customers and records their customer satisfa

Ann [662]

Answer:

71.4699, 81.7301.

Step-by-step explanation:

So, the following are the scores: 74

$Let,\;the\;total\;sum\;of\;the\;scores\;be:\sum x =1149$

$Then,\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\sum x^2=89795$

The length of the score : 15

Then, let the size of the scores be n : 15.

Then, we have to find the mean.

$\bar{x}=\frac{\sum x}{n}$

$=\frac{1149}{15}=76.6$

$Then,\;we\;have\;to\;find\;standard\;deviation:S=\sqrt{\frac{\sum x^2-n.(\bar{x})^2}{n-1} }$

$=\sqrt{\frac{89795-15\times(76.6)^2}{15-1} }=11.2808$

$The\;degree\;of\;freedom:n-1=14$

$So,\;the\;significant\;level:\alpha=1-0.90=0.10$

$and\;the\;critical\;value:t_{\frac{\alpha}{2} }=1.7613$

$Finally:\\=\bar{x}\;\pm\;t_{\frac{\alpha}{2} }\;\frac{S}{\sqrt{n} }\\=(71.4699, 81.7301)$

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3 years ago

Here is a diagram of a person standing next to a lorry.

erma4kov [3.2K]

Answer:

The person is a about 2m

3 0

3 years ago

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