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kari74 [83]
3 years ago
6

Determine whether the data described below are qualitative or quantitative and explain why.The shoe sizes left parenthesis such

as 8 or 10 and one half right parenthesis of test subjectsThe shoe sizes such as 8 or 1012 of test subjects
Choose the correct answer below.
A.The data are qualitativequalitative because they consist ofthey consist of counts or measurements.counts or measurements.
B.The data are quantitativequantitative because they consist ofthey consist of counts or measurements.counts or measurements.
C.The data are qualitativequalitative because they don't measure orthey don't measure or count anything.count anything.
D.The data are quantitativequantitative because they don't measure orthey don't measure or count anything.
Mathematics
1 answer:
Igoryamba3 years ago
7 0

Answer:

B.The data are quantitative because they consist of they consist of counts or measurements.

Step-by-step explanation:

Qualitative data are those data which does not include any number. The data which has characteristic is known as Qualitative data.

Quantitative data are those data which include numbers.

Since the data of shoe sizes include numerical value. Thus it is Quantitative Data.

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Step-by-step explanation:

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3 years ago
Two cars simultaneously left Points A and B and headed towards each other, and met after 2 hours and 45 minutes. The distance be
Oksana_A [137]
<h2>Hello!</h2>

The answers are:

FirstCarSpeed=41mph\\SecondCarSpeed=55mph

<h2>Why?</h2>

To calculate the speed of the cars, we need to write two equations, one for each car, in order to create a relation between the two speeds and be able to calculate one in function of the other.

So,

Tet be the first car speed "x" and the second car speed "y", writing the equations we have:

For the first car:

x_{FirstCar}=x_o+v*t

For the second car:

We know that the speed of the second car is the speed of the first car plus 14 mph, so:

x_{SecondCar}=x_o+(v+14mph)*t

Now, from the statement that both cars met after 2 hours and 45 minutes, and the distance between to cover (between A and B) is 264 miles,  so, we can calculate the relative speed between them:

If the cars are moving towards each other the relative speed will be:

RelativeSpeed=FirstCarSpeed-(-SecondCarspeed)\\\\RelativeSpeed=x-(-x-14mph)=2x+14mph

Then, since we know that they covered a combined distance equal to 264 miles in 2 hours + 45 minutes, we have:

2hours+45minutes=120minutes+45minutes=165minutes\\\\\frac{165minutes*1hour}{60minutes}=2.75hours

Writing the equation:

264miles=(2x+14mph)*t\\\\264miles=(2x+14mph)*2.75hours\\\\2x+14mph=\frac{264miles}{2.75hours}\\\\2x=96mph-14mph\\\\x=\frac{82mph}{2}=41mph

So, the speed of the first car is equal to 41 mph.

Now, for the second car we have that:

SecondCarSpeed=FirstCarSpeed+14mph\\\\SecondCarSpeed=41mph+14mph=55mph

We have that the speed of the second car is equal to 55 mph.

Hence, the answers are:

FirstCarSpeed=41mph\\SecondCarSpeed=55mph

Have a nice day!

7 0
3 years ago
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