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
Vika [28.1K]
3 years ago
12

Problem PageQuestion A Web music store offers two versions of a popular song. The size of the standard version is 2.6 megabytes

(MB). The size of the high-quality version is 4.2 MB. Yesterday, the high-quality version was downloaded four times as often as the standard version. The total size downloaded for the two versions was 4074 MB. How many downloads of the standard version were there?
Mathematics
1 answer:
dalvyx [7]3 years ago
8 0

Answer:

There were 210 downloads of the standard version.

Step-by-step explanation:

This question can be solved using a system of equations.

I am going to say that:

x is the number of downloads of the standard version.

y is the number of downloads of the high-quality version.

The size of the standard version is 2.6 megabytes (MB). The size of the high-quality version is 4.2 MB. The total size downloaded for the two versions was 4074 MB.

This means that:

2.6x + 4.2y = 4074

Yesterday, the high-quality version was downloaded four times as often as the standard version.

This means that y = 4x

How many downloads of the standard version were there?

This is x.

2.6x + 4.2y = 4074

Since y = 4x

2.6x + 4.2*4x = 4074

19.4x = 4074

x = \frac{4074}{19.4}

x = 210

There were 210 downloads of the standard version.

You might be interested in
What is y=3/8x-5<br> in a table of values
iogann1982 [59]
It is 8x-5 you replace the variable y with 3 in the expression
<span />
6 0
3 years ago
Problem-solving Practice
kotykmax [81]
First, what's 3 to the power of 8?
Then what's 3 to the power of 10

Now subtract them by each other for your answer
6 0
3 years ago
Read 2 more answers
3 times the sum of a number and 4
Lyrx [107]

Answer:

3(4+x)

which can be simplified to 12+3x

4 0
3 years ago
Please help me as soon as posable!! In hurry!!(24 points)
attashe74 [19]

The sequence is geometric, so

a_n = r a_{n-1}

for some constant r. From this rule, it follows that

a_3 = r a_2 \implies 20 = 2r \implies r = 10

and we can determine the first term to be

a_2 = r a_1 \implies 2 = 10 a_1 \implies a_1 = \dfrac15

Now, by substitution we have

a_n = r a_{n-1} = r^2 a_{n-2} = r^3 a_{n-3} = \cdots

and so on down to (D)

a_n = r^{n-1} a_1 = 10^{n-1} \cdot \dfrac15

(notice how the exponent on r and the subscript on a add up to n)

4 0
2 years ago
A student scored in the 60th percentile on her math exam. What does this student's score mean in relation to those of the other
Andrei [34K]

Answer:

The correct option is;

c. Her score was better than those of 60% of all test takers

Step-by-step explanation:

Percentile Score is the score of an exam or test candidate with regard to the relative performance of the other persons that took part in the exam or test.

The percentile score is calculated by converting candidates scores into a scale consisting of the scores of all candidates and ranging from 0 to 100

A 60th percentile score means that the student performed better than 60% of all the candidates of the test and 40% of the test takers scored the same as or better than the student.

5 0
3 years ago
Other questions:
  • What is the value of x in the figure below? In this diagram, ABC~CAD.
    14·2 answers
  • Which type of transformation is described (x,y) (x+2, y+3)
    15·1 answer
  • Convert 12 7/12 to a common number
    5·2 answers
  • Identify a way in which an individual develops a credible persona, both in person and online.
    15·1 answer
  • Line f has a slope of –3 8 . Line g is parallel to line f . What is the slope of line g ?
    7·1 answer
  • A student has 6 nickel 14 dimes and 8 quarter. What is the ratio of dimes to quarter ?
    8·1 answer
  • Someone please help me (asap)...
    10·1 answer
  • in the 9th grade, 7 of every 10 students is a girl. if there are 200 students in the 9th grade, how many of the students are gir
    13·2 answers
  • )) Fill in the missing number.<br> ()) 70% of<br> =<br> 56
    11·1 answer
  • WILL GIVE BRAINLY ASAP PLEASE!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!