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Drupady [299]
3 years ago
9

The last answer is 180 pls help

Mathematics
1 answer:
larisa [96]3 years ago
7 0

40+30+20 = 90   there were 90 students surveyed on the graph

40+20 = 60  sixty liked hip hop or rock

60/90 = 2/3 liked hip hop or rock on the graph

2/3 * 360 in the class = 720/3 = 240

240 in the class should like hip hop or rock

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Answer:

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b. P(X≤75) =  0.9

c. P(X>50)=  0.48

d. P(X<100) = 0.9

Step-by-step explanation:

The given data is

x                      25        50       75        100          Total

P(x)                0.16       0.36    0.38    0.10          1.00

Where X is the variable and P(X) = probabililty of that variable.

From the above

a. P(X=50)= 0.36

We add the probabilities of the variable below and equal to 75

b. P(X≤75) = 0.16+ 0.36+ 0.38= 0.9

We find the probability of the variable greater than 50 and add it.

c. P(X>50)= 0.38+0.10=  0.48

It can be calculated in two ways. One is to subtract the probability of 100 from total probability of 1. And the other is to add the probabilities of all the variables less than 100 . Both would give the same answer.

d. P(X<100)= 1- P(X=100)= 1-0.1= 0.9

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chubhunter [2.5K]

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Answer:

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Step-by-step explanation:

The equation you're writing is in slope-intercept form. The coefficient of x is the slope, which is the "rise"/"run" of the line.

Here, to get from the left point to the right point, you must go down 4 units (rise=-4) and 1 unit to the right (run=1). So, the slope is ...

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The constant in the equation is the y-intercept: the y-coordinate of the point where the line crosses the y-axis. That point is marked as (0, 2), so its y-coordinate is 2.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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