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Kay [80]
3 years ago
10

I Don't Know!!!

Mathematics
1 answer:
liq [111]3 years ago
5 0

Answer:

They sold 10 videos and 30 CDs

Step-by-step explanation:

So, you need two different equations-

We will use c to represent CDs and v to represent videos

So-

c + v = 40

4c + 6v = 180

Single out a variable in the first equation-

v = 40 - c

Because this is equal to v, insert it where v is in the second equation-

4c + 6(40 - c) = 180

Multiply-

4c + 240 - 6c = 180

Solve-

-2c + 240 = 180

-2c = -60

c = 30

Now that you know c, use first equation to find v-

30 + v = 40

v = 10

So c = 30 and v = 10

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Damm [24]

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the hall family garden is 3/4 of an acre. if they divide their garden into 1/8 acre sections, how many sections will they have?
Korvikt [17]
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</span><span>if they divide their garden into 1/8 acre sections
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7 0
2 years ago
Q = {1.7, 1.1, 1.4, 2.1, 2.3, s}. What is the absolute difference between the greatest and least possible values of the median o
Daniel [21]

Answer:

Absolute difference between the medians = 0.35

Step-by-step explanation:

After arranging Q in ascending order excluding s, we get

Q = {1.1, 1.4, 1.7, 2.1, 2.3}

Here, the median is 1.7 ( The middlemost value is the required median.)

Now, if s < 1.7,

Q= {1.1, s, 1.4, 1.7, 2.1, 2.3}

Now for the least value, median = 1.55

If s > 1.7,

Q = {1.1, 1.4, 1.7, 2.1, s, 2.3}

Now for the greatest value, median = 1.9

Absolute difference between the medians = |1.9 -1.55|

                                                                          = 0.35

6 0
3 years ago
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