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Mrrafil [7]
2 years ago
12

2) An $80 text book was on sale for $49.60 at the used book store. By

Mathematics
2 answers:
nadya68 [22]2 years ago
3 0

Answer:

38%

Step-by-step explanation:

Original price = $ 80

Price after reduction = $ 49.60

Reduction = 80 - 49.60  = $30.40

Percentage of decrease = \frac{reduction price}{original price}*100

                                         = \frac{30.40}{80}*100\\\\=\frac{3040}{80}

                                          =  38%

Yanka [14]2 years ago
3 0

Answer:

38%

Step-by-step explanation:

80x0.62=49.60

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If four blue marbles and eight non-blue marbles make a probability of 0.33, how many non-blue marbles do you need to combine wit
den301095 [7]

The number of non-blue marbles you need to combine with the blue marbles to achieve a probability of 0.1 is 28.

<h3>How many non-blue marbles are needed?</h3>

Probability determines the odds that a random event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The more likely the event is to happen, the closer the probability value would be to 1. The less likely it is for the event not to happen, the closer the probability value would be to zero.

Probability of picking a blue marble = number of blue marble / total number of marbles

4 / (4 + 8)

4/12 = 0.33

The number of non-blue marbles needed = ( 4 / 0.1) - 12

40 - 12 = 28

To learn more about probability, please check: brainly.com/question/13234031

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5 0
1 year ago
Tylond puts $5,000 into a savings account that earns 4% simple interest. How much interest does he earn after
Softa [21]

Answer:

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Step-by-step explanation:

I have no idea if this is correct but I hope it is. I hope this helps.

4 0
3 years ago
Choose the more precise measurement. A) 32.5 lb B) 28.35 lb *​
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Answer:

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Step-by-step explanation:

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8 0
2 years ago
"solve each system by graphing"
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Put them into y=mx+b
y=1/3x -1 
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Second set: Same thing.
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3 0
3 years ago
How many solutions does 3 - 2x = 5 - x + 3 + 4x have?
vitfil [10]

Well let's see.

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The equation has exactly one solution.

Hope this helps.

5 0
2 years ago
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