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Mandarinka [93]
4 years ago
11

During a sale at a bookstore, Joseph buys a book at full price. He is given a 50 percent discount on a second book of equal or l

ess value. If Joseph buys two books that have a full price of $15 and $10, by what percent is the total cost of the two books reduced during the sale?
Mathematics
1 answer:
Eddi Din [679]4 years ago
6 0
Joseph is going to pay full price for the higher priced book so we start with 15 dollars.  Then he pays 50% of the second book which is 10 dollars, so we find 50% of 10 and then add it to 15...

15 + 50% x 10 =
15 + .5 x 10 =
15 + 5 = 20

He pays a total of $20
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An art teacher had 2/3 gallon of paint to pour into containers .If he poured 1/8 gallon of paint into each container until he ra
frutty [35]

An art teacher had 2/3 gallon of paint to pour into containers .If he poured 1/8 gallon of paint into each container until he ran out of paint how many containers can he fill.

5/8 is less than 2/3, and 6/8 (3/4) is more than 2/3. So, it would take 5 cans at 1/8 gal per can. Therefore, 6 cans.

4 0
4 years ago
Please help very urgent
Allushta [10]

Answer:

it depends how many weeks look below

Step-by-step explanation:

1 week=$100.00

2 weeks=$115.00

3 weeks=$130.00

4 weeks=$145.00

and so on

pretty much every week you go up, she earns 15 bucks

hope this helps! have a good day :)

5 0
3 years ago
What is the sum of 347+645=
iren [92.7K]

Answer:

347 + 645 = 992

Step-by-step explanation:

 347

<u>+645</u>

 922

7 0
3 years ago
How do i solve this using z-scores?
finlep [7]

The life span of the battery can be expected 98% of the batteries to meet the guarantee will be 149.3 hours.

<h3>What is the z-score?</h3>

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The z-score is given as

z = (x - μ) / σ

Where μ is the mean, σ is the standard deviation, and x is the sample.

Many electronic devices use disposable batteries, which eventually have to be replaced.

The mean is 140 hours and the standard deviation is 4 hours.

The marketing department wants to write a guarantee for the battery life.

The life span of the battery can be expected 98% of the batteries to meet the guarantee will be

Then the z value for 98% is 2.326.

Then the life span will be

2.326 = (x - 140) / 4

9.304 = x - 140

       x = 149.3 hours

The life span of the battery can be expected 98% of the batteries to meet the guarantee will be 149.3 hours.

More about the z-score link is given below.

brainly.com/question/15016913

#SPJ1

4 0
2 years ago
(w^2 – 6w)^2– 2(w^2 – 6w) – 35 = 0​
muminat

Step-by-step explanation:

( {w}^{2}  - 6w {)}^{2}  - 2( {w}^{2}  - 6w) - 35 = 0 \\  =  {w}^{4} - 6 {w}^{2}   - 2 {w}^{2}  - 12w  =  35  \\  =  {w}^{4}   - 4 {w}^{2}  - 12w = 35

4 0
4 years ago
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