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il63 [147K]
3 years ago
10

Divide 30 in the ratio into 3:2

Mathematics
1 answer:
Arlecino [84]3 years ago
6 0
3+2 = 5
30 / 5 = 6
so
3 x 6 = 18
2 x 6 = 12

answer
ratio 3: 2 =18:12
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Answer:

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Step-by-step explanation:

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3 years ago
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2 years ago
If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date
slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

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p = prior estimation of the proportion

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If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2

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z_{\alpha/2}=1.645

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n=0.25(\dfrac{1.645}{0.05})^2

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n=270.6025\approx271

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3 0
4 years ago
Last year, Lisa opened an investment account with $5200 . At the end of the year, the amount in the account had increased by 22.
valentinak56 [21]
5600*.065=364                                                                                                                 5600+364=$5964 in the account at the end of the year. ☺☺☺☺<span>   
</span>
5 0
3 years ago
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DaniilM [7]

Answer:

10.153 years

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FV = P·(1 +r/12)^(12t)

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Dividing by P and taking the log, we have ...

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6 0
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