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noname [10]
3 years ago
6

Some one please help me with this question

Mathematics
1 answer:
pychu [463]3 years ago
5 0
The answer is C because you do PEMDAS and then add the 5 from the other side
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Using the following data, calculate the mean absolute deviation:
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Mean - 6.5
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M+n+3+m+n+4
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What is the slope of the line ?
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B. -2

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Slope (m) =  

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3 years ago
The equation of liner is y = -x - 6. Line s includes the point (-1, -3) and is parallel to line
Reptile [31]

Answer:

90 hardcover books

Step-by-step explanation:

We can solve this by setting up a couple of equations.

Let's allow x to represent the number of paperbacks Tim owns, and allow y to represent the number of hardcover books he owns.

Using the information in the question, we can write the equations:

1)x = 4y-3

2) x+y=447

Let's rearrange equation 1 so that it is in standard form:

x-4y=-3

And then let's multiply equation 2 by 4 so that we can cancel out y when we solve the system of equations:

4(x+y=447)

4x+4y=1,788

Then we can add the two equations and solve for x:

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+ 2)4x+4y=1,788

------------------------------------

5x=1,785

x=357

So now we now the number of paperback books Tim has is 357. Let's plug this into one of the original equations to solve for the number of hardcover books (y):

357+y=447

y=90

And now we know that Tim owns 90 hardcover books.

4 0
2 years ago
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