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prohojiy [21]
3 years ago
12

The following graphs have no scales assigned to them. Which of them could not possibly be density curves for a continuous random

variable if they were provided with the right scale?

Mathematics
2 answers:
rjkz [21]3 years ago
8 0
Probabilities are always positive, between 0 and 1. This rules out C.
marysya [2.9K]3 years ago
5 0

Answer:

A, D and E

Step-by-step explanation:

Given are the graphs of some functions and we have to find which are the density functions.

Since total probability is always 1, area under the curve must be equal to 1.

APplyig this we find that graph B cannot be density function.

Since probability is non negative graph C cannot be probability density function.

A, D and E are the density graphs.

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3/4k + 3/8k = 1/2<br> solve for k please
vlabodo [156]

Answer:

K = 4/9

Step-by-step explanation:

4 0
2 years ago
10. Rotate the figure shown 180° clockwise. Record the coordinates of the 3 points<br> image.
inna [77]

Answer:

J' = (6,7)

K' = (6,2)

L'=(3,7)

Step-by-step explanation:

From the attachment, we have:

J = (-6,-7)

K = (-6,-2)

L = (-3,-7)

Rotation: 180 degrees clockwise

Required

Find J', K' and L'

When a point (x, y)is rotated 180 degree clockwise, the resulting point is: (-x, -y)

So, we have:

J' = (6,7)

K' = (6,2)

L'=(3,7)

3 0
3 years ago
5. The students are trying to determine the distance between two particular
natali 33 [55]

Answer:

The actual distance between the cities is 211.67 cm.

Step-by-step explanation:

Given:

The map key indicates that 4.5 cm is equivalent to 75 cm.

Now, to find the actual distance between the cities if the cities are 12.7 cm apart on the map.

Let the actual distance be x.

So, we set a proportion to find the actual distance:

4.5:12.7 = 75:x.

<em>Changing into fractions.</em>

\frac{4.5}{12.7} =\frac{75}{x}

<em>By cross multiplication we get:</em>

4.5x=952.5

<em>Dividing both sides by 4.5 we get:</em>

x=211.67

Therefore, the actual distance between the cities is 211.67 cm.

8 0
3 years ago
PLEASE HELP WORTH 16 POINTS WILL REPORT LINKS
Igoryamba

Answer:

Angle A = 30.8

Angle B = 33.2

Step-by-step explanation:

180 - 116 = 64  

This means that the other two angles need to add up to 64.

I just plugged in numbers until it worked.

I got that x = 14.6

2x + 4

2(14.6) + 4

29.2 + 4

33.2

3x - 13

3(14.6) - 13

43.8 - 13

30.8

Those are your angles. To make sure they are correct you just need to add up all the angles and make sure that they equal to 180.

116 + 33.2 + 30.8 =

180

6 0
3 years ago
Read 2 more answers
Graph the function.<br> [-X + 1, -10 6. f(x) = x2-9, -3 (2x+1, 3
lapo4ka [179]

Answer:

2x2 - 5x - 12 = 0.

(2x + 3)(x - 4) = 0.

2x + 3 = 0 or x - 4 = 0.

x = -3/2, or x = 4.

6 0
3 years ago
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