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netineya [11]
3 years ago
13

If 50% of x I’d 150, what is 75% of x?

Mathematics
1 answer:
zzz [600]3 years ago
7 0
The number is 300. 50% of 300 is 150 so
75% of 300 is 225!
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Cynthia's uncle told her to save 20% of her earnings
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Find 100/20 x 30
=150
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Look at the figure. is the intersection of plane _____ and plane QRST.
ivanzaharov [21]
Plane UVWX and plane QRST
6 0
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Can u answer pls I will give brainliest
Lelu [443]

Answer:

Question 1: y-11x+5 I think; Question 2: I'm not sure

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
It is found that on average, 9% of the population recycles its garbage. Under this assumption, if a random sample of 120 househo
BartSMP [9]

Complete Question

It is found that on average, 9% of the population recycles its garbage. Under this assumption, if a random sample of 120 households in Iowa City is taken, would you be surprised to find that fewer than 3% of households in the sample recycle their garbage? Use the fact that p-hat has an approximately normal distribution.

Group of answer choices

A I would not be surprised because there are lots of lazy students in Iowa City.

B I would not be surprised because 3% is not that far away from 9%.

C I would be surprised because Iowa City is a very clean community which means lots of people recycle their garbage.

D I would be surprised because if the 9% average is true, the chance of a sample proportion being less than 3% is very small (only 1%). Who cares? It's only garbage!

Answer:

The correct option is D

Step-by-step explanation:

From the question we are told that

    The sample size is  n  = 120

    The  mean of the proportion is  p =  0.09

   

Generally the standard deviation is mathematically represented as

      \sigma  =  \sqrt{\frac{p(1-p)}{n} }

=>   \sigma  =  \sqrt{\frac{0.09(1-0.09)}{120 } }

=>   \sigma  = 0.02612

Generally the chance that fewer than 3%   of households in the sample recycle their garbage is mathematically represented as

    P(X < 0.03) =  P( \frac{X - p}{\sigma}  <  \frac{0.03 -0.09}{0.02612} )

    P(X < 0.03) =  P( Z  < -2.297 )

From the z-table  

     P( Z  < -2.297 ) = 0.01

=> [tex]P(X < 0.03) = 0.01/tex]

=>   [tex]P(X < 0.03) = 1\% /tex]

4 0
3 years ago
Help plzzzzzzzzzzzzzzzzzzzzz
Klio2033 [76]
The human ran 0.45 miles per minute.

27 divided by 60 = 0.45

The 60 is the number of seconds in a minute.

Hope this helped! :)
6 0
3 years ago
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