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Marat540 [252]
3 years ago
7

At each mile marker for the first five miles of a marathon, Ellie was 18 seconds, 9 seconds, 14 seconds, 6 seconds, and 3 second

s ahead of her goal pace. What was her mean time ahead of her goal pace?
Mathematics
1 answer:
mixas84 [53]3 years ago
3 0
The mean is the average.

Let A = mean

A = (18 + 14 + 9 + 6 + 3)/5

A = 50/5

A = 10

Ellie's mean time is 10 seconds.
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Chose the correct description of the graph of the inequality: -2x > 8
monitta
The answer would be x<-4, so the answer would be “A number line with an open circle on -4 shaded to the left.

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3 years ago
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How many seconds are in 10 hours
enot [183]
There are 60 seconds in a minute.

There are 60 minutes in an hour.

This means that there'd be 600 minutes in 10 hours.

And if there are 60 seconds in a minute, there are 600 x 60 seconds in 600 minutes.

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So we know that there are 36000 seconds in 10 hours.
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Sophia is organizing textbooks on her bookshelf. She has an English textbook, a biology textbook, a history textbook, and a writ
ANTONII [103]

Answer:

I believe it's 24 combinations.

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I found how many there were when starting with English, and there were six. I multiplied this by four (for the four books) and found 24.

Hope this helps! Have a nice day :)

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3 years ago
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Please help !!
olga2289 [7]
If you have learned how to find the line of best fit manually, then you can do it that way. Perhaps you may want to just find a line that can connect at least two of the points and I believe that that line will be able to represent the other points because, in general, the points are pretty close to one another. 

If you don't want to do it manually and have a graphing calculator (which I recommend) then you can use that to find the line of best fit (and if you want then you can see how precise your points are with your r^2 value). Or there is a website (http://illuminations.nctm.org/Activity.aspx?id=4186), which you can use to help you to find the equation of that particular line. 

Once you have that done, then you can substitute 2009 for the x value in the equation and then see what y value the equation produces. That will then be your answer :) 
4 0
3 years ago
Can u guys help me on #24
lora16 [44]
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