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Olenka [21]
4 years ago
6

Frieda and Joanne are laying a 17 meter track for model trains. They completed one stretch that is 7.44 meters long and another

that is 3.61 meters. Round each distance to the nearest meter. About how much more track do Frieda and Joanne need to lay? A. about 13 meters B. about 7 meters C. about 6 meters D. about 5 meters
Mathematics
2 answers:
marshall27 [118]4 years ago
7 0
6 meters because you round 7.44 to the nearest meter which is 7 then you do the same to <span>3.61 which is 4 then you add 7+4 which equals 11 then subtract 17 from 11 which is 6 so its C. about 6 meters hope it helped:)
</span>
Nata [24]4 years ago
6 0
1st: Round each number. 7.44 rounds down to 7 and 3.61 rounds up to 4.
2nd: Add the two. 7 + 4 = 11
3rd: Subtract how much they've already laid from how much they need to lay. 17 - 11 = 6
So the correct answer is C. about 6 meters
:-D 
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ycow [4]

Answer:

C. (36337.32, 48968.68)

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

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M = 1.96*\frac{9114}{\sqrt{8}} = 6315.68

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The upper end of the interval is the sample mean added to M. So it is 42653 + 6315.68 = 48968.68.

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C. (36337.32, 48968.68)

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3 years ago
Simplify 7(2x+y)+6(×+5y)
iris [78.8K]

Simplify, <em>7(2x+y)+6(x+5y).</em>

<em>a:</em> <em>20x+37y</em>

<em> (7 • (2x + y)) +  6 • (x + 5y) </em>

<em>Step  2  : </em>

<em>Equation at the end of step  2  : </em>

<em>  7 • (2x + y) +  6 • (x + 5y) </em>

<em>Step  3  : </em>

<em>Final result : </em>

<h3><em> </em><em> 20x + 37y</em></h3>

Thanks,

<em>Deku ❤</em>

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PLEASE HELP
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Step-by-step explanation:

just did it

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