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
Rudik [331]
3 years ago
11

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 4.9 MB. Yesterday, there were 1070 downloads of the song, for a total download size of 3521 MB. How many downloads of the high-quality version were there?
Mathematics
1 answer:
MrRissso [65]3 years ago
8 0

x=  standard

y = high quality

x +y = 1070

y=1070-x

2.8x + 4.9y =3521

2.8x +4.9(1070-x) = 3521

2.8x+5243-4.9x =3521

-2.1x=-1722

x=-1722/-2.1 = 820

820*2.8 =2296

1070-820 =250

250*4.9 = 1225

1225+2296 = 3521


there were 250 high quality downloads



You might be interested in
(38x+61y)-(3x-11y) simplify this expression
Roman55 [17]

━━━━━━━☆☆━━━━━━━

▹ Answer

<em>35x + 72y</em>

<em />

▹ Step-by-Step Explanation

(38x + 61y) - (3x - 11y)

38x + 61y - (3x - 11y)

38x + 61 y - 3x + 11y

35x + 61y + 11y

35x + 72y

Hope this helps!

- CloutAnswers ❁

Brainliest is greatly appreciated!

━━━━━━━☆☆━━━━━━━

4 0
3 years ago
name a twich stremer tha has at least has 1k view each and has a YoTube channel that i might not know about also what is the val
lions [1.4K]

Answer:

The answer is down below

Step-by-step explanation:

90

7 0
3 years ago
Read 2 more answers
Both lines pass through the point (-3,-4). one has a slope of 4 and the other has a slope of -1/4
Alchen [17]
If the question is to find the slope-intercept form of both lines, here's the answer:
Both lines pass through the point (-3,-4), so we can use these coordinates in both equations. The slope-intercept form is represented by y=mx+b, with m the slope, b the intersection of the line with Y'Y for x=0, y and x the coordinates of a point.
Let's first apply all these for the first line, with a slope of 4.
y = mx + b
y=-3; x=-4; m=4. All we need to do is find b.
-3 = 4(-4) + b
-3 = -16 + b
b=13
So the equation of the first line is y= 4x + 13.

Now, we'll do the same thing but for the second line:
y=-3; x=-4; m=-1/4, and we need to find b.
-3 = (-1/4)(-4) + b
-3 = 1 + b
b= -4
So the equation of the second line is y=(-1/4)x - 4

Hope this Helps! :)
3 0
3 years ago
Which of the following is an advantage of using systematic random sampling?
bekas [8.4K]

This is a question that asks about the advantages of a systematic random sampling. Thus, we first take a look at the types of sampling, and then we see the advantage of systematic random sampling.

Samples may be classified as:

Convenient: Sample drawn from a conveniently available pool.

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

Systematic:

One of the bigger advantages is that the systematic sampling eliminate clusters, which means that the last option is wrong.

Inadvertently missing patterns is a problem in systematic sampling, and not an advantage, thus the third option is also wrong.

It also does not reduce sampling variability, thus the first option is wrong.

From this, it can be concluded that the correct option is:

Systematic random sampling does not require a finite population size.

For another example of systematic random sampling, you can check brainly.com/question/21100042

8 0
2 years ago
Find the surface area of the pyramid
jolli1 [7]

The surface area is ≈ 451.92

5 0
3 years ago
Other questions:
  • suppose a parabola has a vertex of (-4 7) and also passes through the point (-3,8). what is the equation of the parabola in vert
    9·2 answers
  • What is the length of the side opposite O<br> 3 units<br> O<br> 4 units<br> O<br> 5 units<br> O<br> 6 units
    14·1 answer
  • On your family trip, you used 9 gallons of gas. If the odometer readings before and after your trip were 74,233 and 74,545, resp
    10·1 answer
  • a piece of paper has side lengths of 11 inches and 8 inches . what is the perimeter of the piece of paper ?​
    11·2 answers
  • Maria is riding her bicycle. She rides for 2 hours at a speed of 25.6 kilometers per hour. For how many kilometers does she ride
    15·1 answer
  • The radius of a sphere is multiplied by 1/7 . What effect does this have on the volume of the sphere?
    15·2 answers
  • Order these numbers from least to greatest 1/5 0.5 0.05 0.23 1/3
    7·1 answer
  • One-third of a number decreased by six equals eight. What is the number?<br> 6
    10·2 answers
  • This drawing shows an isosceles triangle work out the size of angle a plz help as soon as possible thks
    8·2 answers
  • WILL GIVE BRAINLIEST, ANSWER FAST PLEASE
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!