4 years ago

When You are Doing mean, median, and mode can you have a zero for the median?

1 answer:

8 0

Sure, but one or more of the numbers would have to be negative.
In that case, even the mean could be zero.

Look at these numbers.
What's the mean ?

1, 2, 6, 4, 7, -20

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The tickets in a box are numbered from 1-20 inclusive. If a ticket is chosen at random and replaced, and then a second ticket is

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3 years ago

What is standard form for 50,000+205 in standard form

oksano4ka [1.4K]

The answer is 50,205.

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Sketch a normal curve has a mean of 95 standard deviation of 12

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4 years ago

Find the point of intersection (if any) of the following pairs of lines: a) x – 2y +1=0 2x + 3y – 7 = 0 b) x-2y+11=0 -x+2y-13 =

pychu [463]

Answer:

a) (11/7, 9/7)

b) There's no point of intersection

Step-by-step explanation:

a) x - 2y + 1 = 0

2x + 3y - 7 = 0

To find the point of intersection, we need to solve the system of equations and the result will be the point of intersection (x,y)

$x-2y+1=0\\x= 2y-1$

Now we substitute x in the second equation:

$2x+3y-7=0\\2(2y-1)+3y-7=0\\4y-2+3y-7=0\\7y-9=0\\y=9/7$

Now we substitute y in our first equation.

$x-2y+1=0\\x-2(9/7)+1=0\\x-18/7+1=0\\x=18/7-1\\x=11/7$ .

The point of intersection is (11/7, 9/7)

b) x -2y +11 =0

-x + 2y - 13 =0

We are going to follow the same procedure:

$x-2y+11=0\\x=2y-11$

$-(2y-11)+2y-13=0\\-2y+11+2y-13=0\\0y=2\\0=2$

Since this system of equations doesn't have a solution, the system has no point of intersection.

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3 years ago

The number of different cars sold in some country rose from 205 in 1997 to 277 in 2007. Find the percent increase. Round to the

Reptile [31]

We are finding slope:

change in y / change in x

277 - 205 / 2007 - 1997

72 / 10

7.2

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3 years ago