1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
trasher [3.6K]
3 years ago
11

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

high-quality version is 4.6 MB. yesterday, the high-quality version downloaded four times as often as the standard version. the total size downloaded for the two versions was 5538 MB. how many downloads of the standard version were there?​
Mathematics
1 answer:
miv72 [106K]3 years ago
6 0

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

You might be interested in
20 points time cause i appreciate the help
Crazy boy [7]

Answer: 4188.8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
CAN SOMEONE PLEASE HELL ME WITH THIS PROBLEM? THANK YOU!!!
Verizon [17]

Answer:

71

Step-by-step explanation:

The reference angle is always the smallest angle  with the x-axis.

The nearest x axis is at 0 or another name for 0 is 360

360 -289 = 71

The reference angle is 71

8 0
2 years ago
How did the temperature change if: at first it's increased by 25% then decreased by 40%
LuckyWell [14K]

Answer:

15%?

Step-by-step explanation:

sorry if im wrong

5 0
3 years ago
In a video game, a guppy that escapes a net turns into three goldfish. Each goldfish can turn into two betta fish. Each betta fi
liubo4ka [24]
1*3*2*2=12 anglefishes to form a guppy
4 0
3 years ago
Read 2 more answers
According to a Gallup survey conducted in July 2011, 20% of Americans favor reducing the U.S. budget deficit by using spending c
Yakvenalex [24]

Answer:

Option C is correct.

The test statistic for this question is -3.13

Step-by-step explanation:

To compute the z-test statistic, the formula is given as

z = (x - μ₀)/σₓ

x = p = sample proportion of the 500 college students sampled, that favor reducing the deficit using only spending cuts with no tax increase = (75/500) = 0.15

μ₀ = p₀ = the proportion to be compared against, that is, the proportion of Americans that favor reducing the U.S. budget deficit by using spending cuts only, with no tax increases = 20% = 0.20

σₓ = standard error of the sample proportion = √[p(1-p)/n]

p = 0.15

n = Sample size = 500

σₓ = √[0.15×0.85/500] = 0.01597

z = (0.15 - 0.20) ÷ 0.01597

z = -3.13

Hope this Helps!!!

8 0
3 years ago
Other questions:
  • The length of the outside stage is 6 feet less than the width.if the total area of the outdoor stage is 720ft^2 what is the widt
    15·1 answer
  • Alvin's age is three times Elgas age. The sum of their ages is 36. What is Elgas age?
    12·1 answer
  • Bread and sugar cost 110 together,bread cost 100 more than sugar,how much does sugar cost?
    6·1 answer
  • Please help with my algebra homework and explain if you can
    12·1 answer
  • To date, Ty has cumulative earnings of $107,600. This week he is paid $3,000. What's the total amount of social security tax for
    14·2 answers
  • you borrow $5,860 from a bank you will have monthly payments of $205.10 for 3 years what percent will you pay back in interest o
    13·1 answer
  • 3.16×10 tool the third power
    14·1 answer
  • Arie's airplanes tracked the number of television advertisements they ran along with the corresponding airplane sales. this tabl
    15·1 answer
  • I dont know how to solve this does anybody?
    8·2 answers
  • The area of the rectangle shown is 44 m².<br> Work out the missing length X.<br> xm<br> 3 m
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!