MATHEMATICS MIDDLE SCHOOL

what are the mean median mode and range of the data set given the altitude of lakes feet -11 -28 -17 -25 -28 -39 -6 and -46

Answers

Answer 1
Answer: Mean: -25
Median: -26.5
Mode: -28 as it appeared twice.
Range: 40
Answer 2
Answer:

Answer:

Mean: -25

Median: -26.5

Mode: -28 as it appeared twice.

Range: 40

Step-by-step explanation:

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a painter has a 24-foot ladder that he is using to paint a house. for safety reasons, the ladder must be placed at least 8 feet from the base of the side of the house. to the nearest tenth of a foot, how high can the ladder safely reach

Answers

c=24
b=8
a=?
a2=c2-b2
a2=(24)2-(8)2
a2=576-64
a2=512
take LCM
a=22.627.....

each truck in the line weigh two tons more than the truck before it. the trucks weigh a total of 32 tons.how many pounds does a truck weigh

Answers

If there are 4 trucks then the first truck weighs x
then x+2tons
then x+4tons
then x+6tons = 32tons
so 4x+12=32
         -12   -12
     /4         /4
x=5 
so plug it back in 
truck 1= 5tons or 10,000lbs
truck 2= 7tons or 14,000lbs
truck 3= 9tons or 18,000lbs
truck 4= 11tons or 22,000lbs

I have a table showing proportional relationships and I don't know how to find ?x 4 10 12
y 6 15 ?

Answers

The ratio here from X/Y=4/6=10/15=12/?

We can see that the ratio is ⅔

Now let's see, ⅔=12/?
cross multiply to get 36=2?
now divide both sides by 2 to get 18=?

Given the line 5x – 2y = 10, Find the equation of a parallel line that passes through the point (2, 3). Find the x- and y-intercepts of both lines. Plot the intercepts and use them to graph both lines on the same set of axes.

Answers

1) subtract 5x from both sides
2) you will be left with 2y= -5x +10
3) then you divide 2 from the three numbers
4) you will be left with y=-5/2x +5
your slope is -5/2x
and your y-intercept is 5
which means your point starts at (0,5) on the graph

When looking at attendance data for 2014-2015 school year, a principal graphed number of tardies, x, a student had compared to their grade point average (GPA), y. The principal found the correlation coefficient to be r = -0.94. There is a ______________ relationship between the number of tardies and the GPA.Immersive Reader

(3 Points)
a.Linear
b.Exponential
c.Quadratic

Answers

Answer:

a. Linear relationship.

Step-by-step explanation:

Negative correlation describes a relationship of two variables in which one variable increases while the other decreases. It shows the the level at which the variables moves in opposite directions to each other.

In the given example, the two variables are inversely proportional. On plotting the variables against each other, it would have a downward slope. The correlation coefficient, r = -0.94, shows that the number of tardies of a student, x, and grade point average (GPA), y, have a linear relationship. As correlation coefficient is a measure of linear relationship, which could be negative, zero, or positive.

It took Mark a total of 4 hours 40 minutes to clean the garage and cut the grass. If it took 1 hour 45 minutes to cut the grass, how long did it take him to clean the garage?THANKS!

Answers

You can get the answer by subtracting the time it took Mark to cut the grass from the total amount of time it took him to do the chores. So 4 hours and 40 minutes minus 1 hour and 45 minutes is 2 hours and 55 minutes
Whoo! I love meh some math, don't you? (sarcastic tone. :D )

To solve this you'll need to do simple subtraction. 

Step 1:
Take away the 5 from the "45"... then it's easier to solve with, just add it at the end. :)

Step 2:
Figure out how long that is 
60×4 =240 = 40 = 280 minutes. 

Step 3: Do the same for the "Grass Cutting"
60 + 40 = 100

Step 4:
100 + 5 = 105
Add on the +5 that we took away in the beginning. 

Step 5:
Subtract! :)
175 minutes. 

Step 6: 
Make it a "time" again by multiplying! Guess what, your on your on. :D
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