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marta [7]
3 years ago
14

Determine area under the standard normal curve given the z score, z less than 1.25

Mathematics
1 answer:
FromTheMoon [43]3 years ago
7 0

Answer:

0.8944

Step-by-step explanation:

Use a calculator or table.

Using a z-score table:

P(z < 1.25) = 0.8944

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Molly opened a bank account. She deposited $86.50 into her account every month for 20 months. She used $24.50 every month to pay
harkovskaia [24]
First, let's multiply 86.50 by 20 since she deposited $86.50 each month for 20 months.

86.50 * 20 = $1,730

Now, we have to divide this by 24.50 * 20 to find how much out of her $1,730 that she used on singing lessons.

24.50 * 20 = $490

Subtract how much she used for singing lessons from her total amount.

1,730 - 490 = $1,240

Finally, we multiply the amount she has left by 1/4 to find out how much she spent on her summer camp. We can also do this by multiplying 1,240 by 0.25 since 0.25 = 1/4.

1,240 * 0.25 = $310

So, Molly spent $310.00 on her summer camp.
Hope this helped!
7 0
3 years ago
Read 2 more answers
A 12-pack of soda costs $10.08 and a 6-pack of the same soda cost $5.34. Which is
Artist 52 [7]

Answer:

the twelve pack

Step-by-step explanation:

12 pack = $10.08 if u get the 6 pack for $5.34 and want to buy two pack it equals $10.68 if you want to save change buy the 12 pack

3 0
3 years ago
Read 2 more answers
John runs 15 miles in 3hours. how many miles can john run per hour
nata0808 [166]

Answer:

5 miles an hour

Step-by-step explanation:

15 divided by 3

3 0
3 years ago
A large box of jelly beans weighs 96.58 lb the jelly beans are evenly divided into 22 bags what is the weight in pounds of the j
Vadim26 [7]

Answer:

The weight in each bag is 4.39lb.

Step-by-step explanation:

To solve this, you simply need to divide 96.58 by 22. The reason you do this is so that way you can divide all of the weight into 22 bags.

96.58 ÷ 22 = 4.39

This means that the weight in each bag is 4.39lb.

4 0
3 years ago
Caleb has 20 more books than Danica. If Caleb gives Danica half of his books, Danica will have 4 more books than Caleb. How many
wariber [46]

Answer:

Option E: 24.

Step-by-step explanation:

When Caleb (C) has 20 more books than Danica (D), we have:

C = 20 + D   (1)

Now, when Caleb gives Danica half of his books:

C' = C - \frac{C}{2}   (2)

Danica will have 4 more books than Caleb, so:

D' = D + \frac{C}{2}     (3)    

Also we have that:

D' = C' + 4   (4)  

By entering equation (2) and equation (3) into equation (4) we have:

D + \frac{C}{2} = C - \frac{C}{2} + 4   (5)

From (1) we have:

D = C - 20   (6)

By entering (6) into (5):

C - 20 + \frac{C}{2} = C - \frac{C}{2} + 4

C = 24

And, from (6):

D = C - 20 = 24 - 20 = 4  

Therefore, the correct option is E, Caleb had to start with 24 books.

I hope it helps you!          

3 0
4 years ago
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