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bogdanovich [222]

4 years ago

11

Together bob and tom take 4 hours to get the yard work done. If bob works alone it takes him 6 hours . How long would it take to

m working alone to do all of the yard work

2 answers:

lidiya [134]4 years ago

6 0

Answer:

8

Step-by-step explanation:

IgorLugansk [536]4 years ago

4 0

Answer:

6 hours

Step-by-step explanation:

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Solve for w. 4w - 15 = 17 Simplify your answer as much as possible.

algol [13]

Start of by trying to make 4w the subject of the equation. + 15 to each side making the equations 4w= 15+17, (15+17=32) 4w= 32 meaning that w= 8 because all you do is divide each side of the equation by 4 . HOPE THAT HELPS . if you need more help just shout me

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Who is in school right now?

valentina_108 [34]

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Step-by-step explanation:

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4 years ago

A gift box has the shape of a rectangular prism. How much wrapping paper do you need to cover the box?

Natasha_Volkova [10]

Answer:

768 in²

Step-by-step explanation:

Surface Area = 2(15*14) + 2(15*6) + 2(14*6)

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3 years ago

A and B are independent events. Find P(A and B). P(A)=1/5, P(B)=3/7

Temka [501]

Answer:

Step-by-step explanation:

8 0

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:

$Median= 74$

6 0

3 years ago