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3 years ago

11

A car is traveling at a steady speed. It travels 1 1/2 miles in 2 1/4 minutes. How far will it travel in 25 minutes ? In 1 hour

?

1 answer:

labwork [276]3 years ago

5 0

it will travel about 2 4/5 in 25 minutes i think

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What is the solution to the equation? 13 3/4 +x= 7 1/4

Butoxors [25]

Answer:

x = $6\frac{1}{2}$

Step-by-step explanation:

$13\frac{3}{4}+x=7\frac{1}{4}$

(subtract $13\frac{3}{4}$ from both sides)

$x=6\frac{2}{4}$ or $6\frac{1}{2}$

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3 years ago

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3 years ago

A sociologist recently conducted a survey of senior citizens who have net worths too high to qualify for Medicaid but have no pr

hjlf

Answer:

a) $s= 9.74$

D. 9.74

b) $Median= 74$

B. 74

Step-by-step explanation:

Part a

We have the following dataset given:

69 74 75 62 70 93 64 69 61 88 67 77 87 90 66 91 77 63 82 82 71 74 76 65 83

We can begin calculating the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = 75.04$

Now we can calculate the sample deviation with the following formula:

$s =\sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}$

And after replace we got:

$s= 9.74$

Part b

For this case we need to sort the value on increasing way:

[1] 61 62 63 64 65 66 67 69 69 70 71 74 74 75 76 77 77 82 82 83 87 88 90 91 93

And the median would be the value in the position 13 and we got:

$Median= 74$

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The expression wx7 gives the number of days in w weeks. What is the value of the expression when w=14?

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98

(Spaceeeeeeee wasterrrrr ignore)

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3 years ago