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wlad13 [49]
4 years ago
6

Write two numbers, Neither that is 7 whos gcf is 7

Mathematics
1 answer:
yanalaym [24]4 years ago
4 0
Well, there's:

7 * 2 =14

and

7 * 3 = 21

Both of these have only the factor 7 in common. Therefore, it is the greatest factor. You can use any combination of numbers that have a factor of 7 and only 7 in common. 


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3 years ago
Which statement correctly explains how Mari could find the solution to the following system of linear equations using
just olya [345]

Multiply the first equation by 7 and the second equation by 2, and then add.

Step-by-step explanation:

2f - 5g=-9

-7f + 3g=4

To eliminate any variable , we need to make the coefficients same with different sign and add it

the coefficient of 'f' in first equation is 2

the coefficient of 'f' in second equation is -7

We already have different sign so we make the coefficients same

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So equation becomes

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4 years ago
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Step-by-step explanation:

5 0
4 years ago
Assume we need to estimate the mean of a normally-distributed population with great accuracy. Specifically, for significance lev
bulgar [2K]

Answer:

n = 2662.56\sigma^2                                

Step-by-step explanation:

We are given the following in the question:

Significance level = 0.01

Width of interval = 0.1

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We have to find the sample size so that the width of the confidence interval is no larger than 0.1

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Formula for sample size:

n = \displaystyle\frac{z^2\sigma^2}{E^2}

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E = 0.05

Putting these values in the equation:

n = \displaystyle\frac{(2.58)^2\sigma^2}{(0.05)^2} = 2662.56\sigma^2

So, the above expression helps us to calculate the sample size so that the width of the confidence interval is no larger than 0.1 for different sample variances.

4 0
4 years ago
Find the value of x<br><br> help me pls!!
V125BC [204]
X=31 because

(2x)+(x-3)=90
2x+x-3=90
3x-3=90
3x=93
x=31

5 0
3 years ago
Read 2 more answers
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