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
saw5 [17]
3 years ago
10

A used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 pe

r CD and 6.00 per video. The sales for both CDs and videos totaled to 180.00.
Mathematics
1 answer:
masha68 [24]3 years ago
4 0

Answer:

30 CDs and 10 Videos were sold.

Step-by-step explanation:

Given that a used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 per CD and 6.00 per video.

The sales for both CDs and videos totaled to 180.00.

Let CDs be x and Videos be y

Then we have x+y =3040

and 4x+6y = 180

Two simultaneous equations in two variables and can be solved by elimination method

multiply I equation by 4 and subtract from II.

2y = 20

y =10

x = 30

30 CDs and 10 Videos were sold.

You might be interested in
To make sure the lobsters are cool but not frozen, you need to keep their temperature between 32 and 40 degrees Fahrenheit while
MaRussiya [10]

C=5/9(F-32) 5/9 =1.8 32-32= 0* 1.8 = 0 32F= 0Celsius 40-32=8* 14.4 40F= 14.4 CTemperature between 0-14 degrees Celsius

5 0
3 years ago
Combine like terms 7a - a+ 16 = ?
dexar [7]
6a+16

Explanation:
If there's just a variable, there's an understood 1 in front of it. So what that really says is:

7a-1a+16

So, you combine the a's. 7a minus 1a is 6a. Same as 7-1,but you have a variable stuck on the end of it.

6a+16

:^)
4 0
3 years ago
Read 2 more answers
What is 0.000025(800)^2 - 0.04(800) +40..?
Scilla [17]

Answer:

24

Step-by-step explanation:

6 0
2 years ago
In one of its Spring catalogs, L.L. Bean® advertised footwear on 28 of its 192 catalog pages. Suppose we randomly survey 20 page
vichka [17]
100 easy os it correct
8 0
2 years ago
PLEASE HELP The toll to cross a bridge is $1.25. If $72.50
blagie [28]

Answer:

58

Step-by-step explanation:

all you have to do is divide 1.25 from 72.50

6 0
2 years ago
Other questions:
  • What does 3-3*6+2 equal
    15·1 answer
  • 0.1 is 10 times as much as
    10·1 answer
  • Round 649,418 to the nearest ten,_____,nearest hundred_____,nearest thousand_____,nearest ten thousand_____,nearest hundred thou
    10·2 answers
  • 5. Why do routine events tend to fade from memory over time?
    11·1 answer
  • X-intercept=? y-intercept=? What is the slope?​
    14·1 answer
  • The number of passengers on an airline rose fairly steadily from about 200 000 in 2005 to
    12·1 answer
  • Which sequences are arithmetic? Check all that apply.
    13·1 answer
  • Simplify<br><br> x^4 * x <br><br> What would be the simplified answer
    5·2 answers
  • Please help this is due tomorrow!!
    12·2 answers
  • Help me with this problem
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!