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PilotLPTM [1.2K]
3 years ago
12

3 fraction equivalent to 4/7

Mathematics
2 answers:
ddd [48]3 years ago
7 0
1. 28/49 2. 32/56 3. 36/63
GalinKa [24]3 years ago
4 0

Answer: 8/14, 12/21, and 288/504

Step-by-step explanation: To find 3 fractions that are equivalent to 4/7, we either multiply or divide the numerator and denominator by the same number.

If we multiply 4/7 by 2 in both the numerator and denominator, we get the equivalent fraction 8/14.

If we multiply 4/7 by 3 in both the numerator and denominator, we get the equivalent fraction 12/21.

If we multiply 4/7 by 72 in both the numerator and denominator, we get the equivalent fraction 288/504.

These are just 3 possible answers.

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A candidate for one of Ohio's two U.S. Senate seats wishes to compare her support among registered voters in the northern half o
Radda [10]

Answer:

(0.531-0.45) - 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.050  

(0.531-0.45) + 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.112  

And the best option for this case would be:

A. 0.050 to 0.112.

Step-by-step explanation:

Data given

p_A represent the real population proportion of who support the cnadite for the northern half state  

\hat p_A =\frac{1062}{2000}=0.531 represent the estimated proportion of who support the candidate for the northern half state  

n_A=2000 is the sample size required the northern half state  

p_B represent the real population proportion of who support the candidate for the southern half state  

\hat p_B =\frac{900}{2000}=0.45 represent the estimated proportion of people who support the candidate for the southern half state  

n_B=2000 is the sample size for the northern half state  

z represent the critical value

The confidence interval for the difference of two proportions would be given by this formula  

(\hat p_A -\hat p_B) \pm z_{\alpha/2} \sqrt{\frac{\hat p_A(1-\hat p_A)}{n_A} +\frac{\hat p_B (1-\hat p_B)}{n_B}}  

For the 95% confidence interval the value of \alpha=1-0.95=0.05 and \alpha/2=0.025, with that value we can find the quantile in the normal standard distribution and we got.  

z_{\alpha/2}=1.96  

Replacing into the formula we got:

(0.531-0.45) - 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.050  

(0.531-0.45) + 1.96 \sqrt{\frac{0.531(1-0.531)}{2000} +\frac{0.45(1-0.45)}{2000}}=0.112  

And the best option for this case would be:

A. 0.050 to 0.112.

8 0
3 years ago
How many models of 100 do you need to model 3200 explain
Nataly_w [17]
If you had 1 model and it equaled 100. You then would have 32 to equal 3200, because  32 X 100 = 3200. The answer would be 32 models to get you 3200.
7 0
3 years ago
Read 2 more answers
Evaluate the equation. H divided by 3 = 69 2/3
Strike441 [17]

Answer:

138

Step-by-step explanation:

Do the inverse. 69 2/3 multiplied by 3 is 138.

7 0
2 years ago
Add<br> 60 5/9 <br> 54 1/3<br> 59 1/3<br> 56 1/6<br> _____<br><br> Thank You!
kykrilka [37]

Answer:

230 5/9

Step-by-step explanation:

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8 0
3 years ago
Gerry has a piece of poster board that is 3 feet wide. He wants to draw columns on the poster board so that each column is 1/6 o
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A.2

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