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
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.

You might be interested in
Show that angle a+ angle b is equal to angle d​
mr_godi [17]

sum of two angles of triangle are equal to the exterior angle of triangle

8 0
2 years ago
Read 2 more answers
Jason decided to look at new trucks. Jason found a used truck for 34,000 dollars. A new truck is 40,000 dollars so what percent
nexus9112 [7]

Answer:

Percent of rise of a new truck on a used truck  = 15%

Step-by-step explanation:

Let x be the percentage of saved money if Jason buying a used truck.

Given:

Price of the used truck = $34,000

Price of the new truck = $40,000

We need to find the percent of rise Jason saves on a used truck rather than buying a new truck

Solution:

Using a percentage formula.

percentage\ cost = \frac{(100-x)}{100}\times Original\ cost

Substitute Percentage cost = 34,000 and Original cost = 40,000 in above formula.

34000 = \frac{(100-x)}{100}\times 40000

34000 = (100-x)\times 400                    (\frac{40000}{100}=400)

Using cross multiplication rule.

(100-x)=\frac{34000}{400}

85=100-x

x = 100-85

x = 15%

Therefore, Jason used 15% rise of a new truck for a used truck.

6 0
3 years ago
If the slope of a line is -1 and two points on the line are (-9, 3) and (-10, r), what is the value of r?
ANEK [815]

Answer:

r=4

Step-by-step explanation:

We know that the slope of the line is -1.

We also know that the line passes through (-9, 3) and (-10, r).

We want to find the value of r.

First, let's figure out the equation of our line. We can use the point-slope form:

y-y_1=m(x-x_1)

Where m is the slope and (x₁, y₁) is a point.

So, let's substitute -1 for m. Since we know the point (-9, 3), let's use this for (x₁, y₁).

Substitute:

y-(3)=-1(x-(-9))

Simplify:

y-3=-(x+9)

Distribute:

y-3=-x-9

Add 3 to both sides. So, our equation is:

y=-x-6

It passes through (-10, r) and we want to find the value of r. So, let's substitute -10 for x and r for y, since -10 is our x and r is our y. So:

r=-(-10)-6

Evaluate for r. Distribute:

r=10-6

Subtract:

r=4

So, the value of r is 4.

And we're done!

6 0
2 years ago
The following polynomial can be factored using the techniques of this lesson. <br><br> x2 + 16
Nat2105 [25]

Answer:

The answer here would be false

Step-by-step explanation:

6 0
3 years ago
Hannah's school hosted a book donation. There are 150 students at her school, and they donated a total of b books! Hannah donate
mezya [45]

There are 150 students in Hannah's school.

Sum of books donated by the students =b.

Average books donated by each student =\frac{b}{150}

It is given Hannah donated 3 times as many books each student donated.

Number of books donated by Hannah= 3 times \frac{b}{150} = \frac{b}{50}

The expression of the number of books donated by Hannah= \frac{b}{50}

7 0
3 years ago
Read 2 more answers
Other questions:
  • cynara has a bag of red, blue, and black pens. She randomly selects a pen, records the color, and puts it back in the bag, She d
    13·1 answer
  • Which expression is equivalent to 7a^2b + 10a^2b^2 + 14a^2b^3?
    8·2 answers
  • George tells you that when variables are in the denominator, the equation becomes unsolvable. "There is a value for x that makes
    14·1 answer
  • F(x) = x^2<br> g(x) = –2x^2<br> Which option could show the graphs of f and g?
    14·1 answer
  • What is the value of 4.6 – t when t = 3.1?
    12·2 answers
  • There were 230 shoppers at an electronics store on opening day. The specials that day allowed 21​% of shoppers to receive a free
    12·1 answer
  • Consider the table of values and the equation, which both represent a function,
    10·1 answer
  • MATH AND PERCENTAGES
    6·2 answers
  • Find the inverse of the function f f (x )<br><br> equals 9 x + 7
    15·1 answer
  • In July 2005, the journal Annals of Internal Medicine published a report on the reliability of HIV testing. Results of a large s
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!