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zalisa [80]
3 years ago
10

Question 4 of 10

Mathematics
1 answer:
Zigmanuir [339]3 years ago
5 0

Answer:

Uhhh....... D: 5:3 >-< hope I helped

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a web music store offers two version of a popular song. the size of the standard version is 2.9 megabytes (MB). the size of the
miv72 [106K]

Answer: 260 downloads of the standard version were there.

Step-by-step explanation:

Let x represent the number of downloads of the standard version.

Let y represent the number of downloads of the high-quality version.

Yesterday, the high-quality version downloaded four times as often as the standard version. It means that

y = 4x

The size of the standard version is 2.9 megabytes (MB). the size of the high-quality version is 4.6 MB. the total size downloaded for the two versions was 5538 MB. It means that

2.9x + 4.6y = 5538- - - - - - - - - - - -1

Substituting y = 4x into equation 1, it becomes

2.9x + 4.6 × 4x = 5538

2.9x + 18.4x = 5538

21.3x = 5538

x = 5538/21.3

x = 260

6 0
3 years ago
Person A can paint the neighbor's house 5 times as fast as Person B. The year A and B worked together, it
LenKa [72]

Answer:

Person A paints the house in 12 days.

person B paints the house in 60 days.

Step-by-step explanation:

The together rate is the sum of each separate rate.

Person A can paint the neighbor's house 5 times as fast as Person B.

This means that the rate of person A is 1/x, and the rate of person B is 1/5x.

The year A and B worked together, it took them 10 days.

This means that:

\frac{1}{x} + \frac{1}{5x} = \frac{1}{10}

Multiplying everything by 10x

10 + 2 = x

x = 12

This means that:

Person A paints the house in 12 days.

person B paints the house in 60 days.

8 0
3 years ago
A group of preschoolers has 8 boys and 24 girls. What is the ratio of girls to boys?
marta [7]
1 boy to every 3 girls
6 0
3 years ago
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Is 3/5 + 3/5 negative or positive <br> ​<br> ​<br> ​
Elan Coil [88]

Answer:

positive

Step-by-step explanation:

when there is no sign in front of the numbers, we can assume that the numbers are positive

8 0
2 years ago
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75 POINTS!!! PLEASE ANSWERl
denpristay [2]

Answer:

67th percentile

Step-by-step explanation:

If the mean is 8 with a standard deviation of 1.5, the percentile rank of a shoe with at least a size of 9 is 66.6 repeating, or 67th if rounded.

4 0
3 years ago
Read 2 more answers
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