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svetoff [14.1K]
2 years ago
10

Assume that a professor gives an exam to a class of 50 students. The high score is 98 points and the low score is 48 points. The

professor wants to create a frequency distribution that is divided into five classes for the exam scores. The class width for the data is approximately _____________ points.
Mathematics
1 answer:
____ [38]2 years ago
3 0

Answer:

98-48=50 so the answer is 50

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The ratio of 4:8 is equivalent to x:6, what is the value of x?
Dimas [21]

Answer:

x = 3

Step-by-step explanation:

Given

4 : 8 = x : 6, expressing in ratio form, that is

\frac{4}{8} = \frac{x}{6} ( cross-  multiply )

8x = 24 ( divide both sides by 8 )

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3 years ago
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Can someone please help me.
Art [367]

I will give you everything I can do:

11)

Lets say Car A travels at x mph. That means Car B travels at x+2 mph.

Both of them are traveling towards each others, so we can say the total speed is 2x+2.

Now i takes 3 hrs and we know the distance.

Since R*T=D

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2x=88

x=44

12)

To find perpendicular we want to find the opposite reciprocal of the original slope. Therefore the slope is 3/2.

Now we must find the equation of the line with the given variable.

First find b.

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13) All work will be shown below.

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6+6+12x=2(3x-12+7)

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First we must find the amount each train traveled.

The speed of F train(Freight train)=x

The speed of P train(passenger train)=x+6

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To find average speed you must do Total Distance/Total Time.

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The average speed of F train is 22 mph and average speed of P train is 28 mph.

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Work:

-4=-3*-5/3+b

-4=5+b

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16)

F=kx-kx0

First kx0 = 0

So F=kx

So x=F/k

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3 years ago
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Step-by-step explanation:

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