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4 years ago

Working together, Jacob and Kristin can

Mathematics

1 answer:

Wewaii [24]4 years ago

6 0

Answer:

15 minutes

Step-by-step explanation:

Their rate together is 1/6 floor per minute.

Her rate alone is 1/10 floor per minute.

His rate is the difference of these:

1/6 - 1/10 = 5/30 -3/30 = 2/30 = 1/15 . . . . floor per minute

It would take Jacob 15 minutes to do it alone.

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Given the points (9, -7) and (-1, 10) find the slope.

Julli [10]

Answer:

havvvveeeeee annn amazinnggggg day :)

Step-by-step explanation:

5 0

3 years ago

A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly that airline again. Find th

prohojiy [21]

Answer:

$\hat p =\frac{X}{n}$

And replacing we got:

$\hat p =\frac{132}{146}= 0.904$

And for this case the standard error assuming normality would be given by:

$SE= \sqrt{\frac{\hat p (1-\hat p)}{n}}$

And replacing we got:

$SE= \sqrt{\frac{0.904*(1-0.904)}{146}}= 0.024$

Step-by-step explanation:

For this problem we know the following notation:

$n= 146$ represent the sample size selected

$X= 132$ represent the number of airplane travelers who after a flight would fly that airline again

The estimated proportion for this case would be:

$\hat p =\frac{X}{n}$

And replacing we got:

$\hat p =\frac{132}{146}= 0.904$

And for this case the standard error assuming normality would be given by:

$SE= \sqrt{\frac{\hat p (1-\hat p)}{n}}$

And replacing we got:

$SE= \sqrt{\frac{0.904*(1-0.904)}{146}}= 0.024$

5 0

3 years ago

What is the percent of 45% of $432

Elan Coil [88]

Answer:

45% of 432 is 194.4

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Pat’s Potato Farm grew 490 pounds of potatoes. Pat delivered 3/7 of the potatoes to a vegetable stand. The owner of the vegetabl

madam [21]

Answer:

Step-by-step explanation:

I first multiplied 490 by 3/7

giving me 1470/7

I divide 1470 by 7 giving me 210

As I got 210

I multiplied 210 with 2 and got 410/3

I divided 410 by 3, getting 140.

It then said half of what was delivered was put into 5 pound bags, so

140× 1/2 or 140÷2 is 70

70 divided by 5 is 14

They made 14 5-pound bags.

3 0

3 years ago

A- 3b/7=5 solve for b

DaniilM [7]

Answer:

b=7/3(A-5)

Step-by-step explanation:

Subtract A on both the sides.

A- 3b/7-A=5-A

- 3b/7=5-A

Multiply by 7 on both the sides.

-3b=7(5-A)

Divide by -3 on both the sides.

b=7/3(A-5)

5 0

3 years ago