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Svet_ta [14]
2 years ago
15

A student made a mistake when measuring the volume of a big container. He found the volume to be 75 liters.However, the real val

ue for the volume is 60 liters. What is the percent error?
Mathematics
1 answer:
DENIUS [597]2 years ago
3 0

Answer: 20%

Step-by-step explanation:

Explanation is in progress of writing:

First, I will divide 60 by 75 and multiply by 100, to find what percent of 75 is 60:

= \frac{60}{75} · 100

= 0.8 · 100

= 80%

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Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or classes. If 14 adult smartphone us
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The probability that fewer than 4 of then use their smart phones in meetings  or classes is 0.00030243747.

Step-by-step explanation:

Fewer than 4 means ,less than 4 which is any number less than 4 and not including 4. This is 3, 2,1 and 0. So you find the probability that exactly 3 of then use their smart phone, exactly 2 of them use their smart phones, exactly 1 of them use his/her smart phone and none of them.

Given that 52% use smartphones in meetings and classes =0.52

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For C(14,3) you will have "14 chose 3", number of ways of choosing 3 out of 14'

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For C(14,2) you will have "14 chose 2", number of ways of choosing 2 out of 14

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For C(14,1) you will have "14 chose 1", number of ways of choosing 1 out of 14

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For  C(14,0) you will have "14 chose 0", number of ways of choosing 0 out of 14

=(0.52)⁰*(0.48)¹⁴=1*0.00003446492=0.00003446492

The probability that fewer than 4 of them use their smartphones in meetings or classes will be

0.00019018714 +0.00004044841+0.000037337+ 0.00003446492=0.00030243747

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Find the area of rectangle PLUM
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PL= sqrt(4^2+12^2)=4sqrt(1+9)=4sqrt(10)

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2 years ago
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