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rosijanka [135]
3 years ago
9

Number 3 Show me how you got it

Mathematics
1 answer:
ELEN [110]3 years ago
7 0
I can’t see all of it
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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

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3 years ago
Write the function f(x)=-3x^(2)+18x-24 in intercept form
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Answer:

x=67

Step-by-step explanation:

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3 years ago
Brian was scuba diving at the Great Barrier Reef in Australia. After he jumped in the water, he descended 18 feet. Then he rose
Levart [38]

amswer:

-13 feet

step by step:

-18+5=-13

8 0
2 years ago
I need help with this question please
Gemiola [76]

Answer:

X = 13

Step-by-step explanation:

7 0
2 years ago
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A.63<br> B.54<br> C.99<br> D.126
Neporo4naja [7]

Answer:

C

Step-by-step explanation:

Area = (8 + 14) x 1/2 x 9

Area = 22 x 1/2 x 9

Area = 11 x 9

Area = 99

<em>Hope that helps!</em>

<em>-Sabrina</em>

6 0
2 years ago
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