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2 years ago

Choose the ratio that you would use to convert 880 yards to miles. Remember

Mathematics

1 answer:

gtnhenbr [62]2 years ago

8 0

The answer would be 0.5 because 880 is half of 1760 meaning that 0.5 is also equal to 1/2. So since 1760 equals one mile and 880 is half of 1760 it’s half a mile. Hope this helps :)

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A committee of three men and two women can be formed from a group of nine men and eleven women in how many different ways.

Marrrta [24]

Answer:

4620.

Step-by-step explanation:

The number of combinations of 3 men from 9

= 9!/(9-3)!3!

= 9*8*7/3*2*1

= 84 ways.

The number of combinations of 2 women from 11

= 11!/11-2)!2!

= 11*10/2*1

= 55 ways.

So the total number of ways of men and women in the committee

= 84*55

= 4620.

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1 year ago

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1 year ago

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o-na [289]

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2 years ago

Find the slope of the line that passes through (3, 10) and (7, 9).

vladimir2022 [97]

Answer:

-1/4

Step-by-step explanation:

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3 years ago

Read 2 more answers

Each year the US Environmental Protection Agency (EPA) releases fuel economy data on cars manufactured in that year. Below arc s

fomenos

Answer:

Follows are the solution to this question:

Step-by-step explanation:

Please find the complete question in the attachment file.

$n_1 = 26 \\\\ x_1 = 16.12 \\\\s_1 = 3.58\\\\n_2 = 26\\\\ x_2 = 19.85 \\\\ s_2 = 4.51$

$H_0: u_1 = u_2\\\\H_1: u_1 \neq u_2$

Using formula:

$\to S^{2}_{p}=\frac{S^{2}_{1}(n_1 -1)+ S^{2}_{2}(n_2-1)}{n_1+n_2-2}$

$\to Sp^2 = \frac{((26-1) \times (3.58^2) + (26-1) \times (4.51^2))}{(26+26-2)}$

$= \frac{((25) \times 12.8164 + (25) \times 20.3401 )}{(26+24)}\\\\ = \frac{(320.41 + 508.5025)}{(50)}\\\\ = \frac{(828.9125)}{(50)}\\\\=16.57825$

$\to Sp = 4.0716$

Calculating the value of standard error:

$\to SE = Sp \times \sqrt{\frac{1}{n_1}+\frac{1}{n_2}}$

$=4.0716 \times \sqrt{\frac{1}{26}+\frac{1}{26}}\\\\=4.0716 \times \sqrt{\frac{1+1}{26}}\\\\=4.0716 \times \sqrt{\frac{2}{26}}\\\\=4.0716 \times \sqrt{\frac{1}{13}}\\\\=4.0716 \times 0.277 \\\\=1.1278332\\\\= 1.1293$