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3 years ago

jennifer is saving money to buy a bike. the bike cost $252. She has 119 saved, each week she adds $19 to her savings.

Mathematics

1 answer:

SVETLANKA909090 [29]3 years ago

8 0

It will take her 7 weeks to get it

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According to The Wedding Report, Inc., the mean cost for a wedding in the United States is $28732 (as of November 2008). Suppose

Stella [2.4K]

Answer:

Following are the solution to the given points:

Step-by-step explanation:

$X = \text{cost of wedding}\sim \text{Normal}\ (\mu = 28732, \sigma= 1500)\\\\$

For point a:

$Probability\ = 0.00000359\\\\ \text{(Using Excel function:} =NORMDIST(22000,28732,1500,1)).$

For point b:

$Probability \ = 0.014678\\\\\text{(Using Excel function:} =1-NORMDIST(32000,28732,1500,1))\\\\$

For point c:

$Probability\ = 0.794614436 \\\\$

$\text{(Using Excel function:} \\=NORMDIST (30000,28732,1500,1)-NORMDIST(25000,28732,1500,1))\\\\$

For point d:

$Q_1 = 27720.26537 \\\\\text{(Using Excel function:} =NORMINV(0.25,28732,1500)) \\\\Q_3 = 29743.73463 \\\\\text{(Using Excel function:} =NORMINV(0.75,28732,1500)).$

For point e:

$IQR = Q_3 - Q_1 = 29743.73463 - 27720.26537 = 2023.469251.$

For point f:

$Top\ 10\% = 30654.32735 \\\\\text{(Using Excel function:} =NORMINV(0.9,28732,1500)).$

5 0

3 years ago

Rearrange y= 2(x-a)/x to make x the subject

Sidana [21]

Answer:

y = 2(x-a)/x

xy = 2x-2a

xy-2x = -2a

x(y-2) = -2a

x = (-2a)/(y-2)

3 0

3 years ago

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In recent history, calculus students have been expected to work out partial fraction expansions by hand.

Nina [5.8K]

Answer:

true

Step-by-step explanation:

4 0

3 years ago

Hesperia Community Center is buying new seating for their building. They want to purchase a combination of stools and chairs. St

Digiron [165]

Answer:

15c + 25s ≤ 1500

Step-by-step explanation:

Let the number of stools be s

Let the number of chairs bought be c

If each tools cost $15, s stools will cost $15c

If a chairs cost $25, c chairs will cost $25s

Total costs = 15c + 25s

If the center cannot spend more than $1500, then the required equation will be 15c + 25s ≤ 1500

The inequality sign will be less than and equal to since they cannot spend an amount greater than $1500.

Hence the correct equation is 15c + 25s ≤ 1500

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3 years ago

5 boys were to carry a load of 2½kg. They shared the load equally. What is the weight of load carried by each boy?

mr Goodwill [35]

Answer:

1/2 or 0.5 kg

Step-by-step explanation:

This is a division problem.

See attached.

5 0

1 year ago

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