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Drupady [299]
2 years ago
14

I WILL MARK BRAINLY PLUS GIVE 33+

Mathematics
1 answer:
Mrrafil [7]2 years ago
3 0

Answer:

There is a very strong positive correlation between size of a cell phone data plan and the number of text  messages sent in the U.S.

Step-by-step explanation:

The correlation coefficient is a statistical degree that computes the strength of the linear relationship amid the relative movements of the two variables (i.e. dependent and independent).It ranges from -1 to +1.

Positive correlation is an association amid two variables in which both variables change in the same direction.  A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.

Negative correlation is a relationship amid two variables in which one variable rises as the other falls, and vice versa.

The correlation coefficient for the relationship  between the size of a cell phone data plan, x, and the number of text  messages sent, y is:

<em>r</em> = +0.97.

The correlation value is very close to +1.

So, we can say that there is a very strong positive correlation between size of a cell phone data plan and the number of text  messages sent in the U.S.

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A flatbed truck travels 144 miles in 5 hours. A semi-trailer truck travels 327 miles in 4 hours. A tanker truck travels 589 mile
GenaCL600 [577]

Answer:

<u>The semi-trailer truck has the fastest average speed</u>

Step-by-step explanation:

Let's recall that the formula of the average speed is:

Average speed = Distance/Speed

Now, we can calculate the average speed for each class of vehicle, as follows:

Flatbed truck average speed = 144/5 = 28.8 miles per hour

<u>Semi-trailer truck average speed = 327/4 = 81.75 miles per hour</u>

Tanker truck average speed = 589/15 = 39.27 miles per hour

Which truck has the fastest average speed?

<u>The semi-trailer truck has the fastest average speed</u>

4 0
2 years ago
Richard walks every day for exercise at a rate of 1 kilometer every 12 min. At this rate ,how many meters can Richard walk in a
garik1379 [7]
60 minutes in an hour
60÷12=5
1,000 meter in 1 km
5×1=5
5×1000=5000
therefore, 5000 meters
3 0
3 years ago
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Sever21 [200]
So so so so 0.5cm? Like
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this translates to
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we then plug that into our first equation
and get
n + 7n = 40

then we solve for n
add like terms
8n = 40

then divide both sides by 8
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therefore Jimmy has 5 nickels
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Answer:

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Step-by-step explanation:

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