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elena-s [515]
3 years ago
15

Which equation is correctly represented by the following graph?

Mathematics
1 answer:
irina [24]3 years ago
6 0
Horizontal lines are = to y

it goes through 2.5

y = 2.5
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two long books containing a total of 2400 pages have a ratio of 3 pages to 5 pages. how may pages are in each book?
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The average commute times for employees of a large company is 32 minutes. The commute time of 10employees are 40, 31, 32, 16, 25
Ira Lisetskai [31]

Given:

40,31,32,16,25,35,22,53,23 and 33.

a)

Sample mean:

\bar{x}=32

Population mean:

\mu=\frac{\Sigma(x_i)}{n}_{}\mu=\frac{40+31+32+16+25+35+22+53+23+33}{10}\mu=\frac{310}{10}\mu=31

b)

\sigma=\sqrt[]{\frac{\Sigma(x-\mu)^2}{n-1}}\sigma=\sqrt[]{\frac{81+0+1+225+36+16+81+484+64+4}{10-1}}\sigma=\sqrt[]{\frac{992}{9}}\sigma=\frac{\sqrt[]{992}}{3}\sigma=10.4987\text{Error}=\pm z\times\frac{\sigma}{\sqrt[]{n}}

z value is not given so taken as 95% on confidence level

z=1.96\text{Error}=\pm1.96\times\frac{10.4987}{\sqrt[]{10}}\text{Error}=\pm6.5072\text{Error}=\pm6.5

4 0
2 years ago
Y-intercept for x-2y=8
lukranit [14]

-4    first we rearrange the question x-2y=8

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-2y=-x+8

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-4 is the y intercept.

7 0
3 years ago
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