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bonufazy [111]
3 years ago
7

Michelle purchased 25 audio files in January. In February she purchased 40 audio files. Find the percent increase in the number

of audio files purchased per month.
Mathematics
1 answer:
Tcecarenko [31]3 years ago
3 0
The answer is 60% increase
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the sum of three numbers is 128.The third number is 10 more than the first .The second number 4 times the third number. what are
Ray Of Light [21]
128 = a + + 4(a + 10) + (a + 10)
128 = a + 4a + 40 + a + 10
128 = 6a + 50
128-50 = 6a
78 = 6a
13 = a

1st = a = 13
2nd = 4(a + 10) = 4(23) = 92
3rd = a + 10 = 23
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3 years ago
How do I find the missing side lengths? Someone please help!!!
adell [148]
45°-45°-90°
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3 years ago
Which of the following expressions represents the distance between -13 and -4 on a number line
lesya692 [45]

Answer:

<h2>a) |-13 - (-4)|</h2>

Step-by-step explanation:

The formula of a distance between two points (numbers) A and B on the number line:

d = |B - A| = |A - B|

We have A = -13 and B = -4. Substitute:

d = |-13 - (-4)|

6 0
3 years ago
the mean height of a group of 500 nonsmoking college students is 74 inches and the standard deviation is 5 inches. what is the p
Novosadov [1.4K]
Based on the given description above, I have analyzed it and come up with a solution to get the probability if in a random sample of 25 students from this said group and the average height is between 73 and 75 inches. So if you calculate it, it will be like this: 
<span>2P(Z<2)−1</span> To find the probability of Z, use the normal distribution table.
The value for Z being less than 2 is 0.9772. The final result is then<span><span>2(0.9772)−1=0.9544
Hope this is the answer that you are looking for.</span></span>
3 0
3 years ago
A 340 m wire is cut into three pieces. The second piece is 4 times as long as the first. The third piece is 3 times as long as t
USPshnik [31]

Answer: total length 5780

Step-by-step explanation:

1st wire. 340m

2nd wire. 1360m

3rd wire. 4080

3 0
3 years ago
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