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ryzh [129]
2 years ago
12

A Web music store offers two versions of a popular song. The size of the standard version is 2.8 megabytes (MB). The size of the

high-quality version is 4.4 MB. Yesterday, the high-quality version was downloaded three times as often as the standard version. The total size downloaded for the two versions was 3840 MB. How many downloads of the standard version were there?
Mathematics
1 answer:
Svetradugi [14.3K]2 years ago
4 0

Step-by-step explanation:

s = number of standard downloads

2s = number of high-quality downloads

2.8s + 4.6(2s) = 2760

2.8s + 9.2s = 2760

12s = 2760

s = 230

The standard version was downloaded 230 times and the high-quality version was downloaded 460 times.

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ruslelena [56]

Answer:

x\le \:-2\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x\le \:-2\:\\ \:\mathrm{Interval\:Notation:}&\:(-\infty \:,\:-2]\end{bmatrix}

Please check the attached number line graph.

The number line clearly indicates that the graph is heading towards negative infinity from -2.

Step-by-step explanation:

Given the inequality expression

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The inequality symbol ' ≤ ' means 'less than or equal to'.

Thus,

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In other words,

x\le \:-2\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x\le \:-2\:\\ \:\mathrm{Interval\:Notation:}&\:(-\infty \:,\:-2]\end{bmatrix}

Please check the attached number line graph.

The number line clearly indicates that the graph is heading towards negative infinity from -2.

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lyudmila [28]

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