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julsineya [31]
3 years ago
14

A random variable X follows the continuous uniform distribution with a lower bound of −4 and an upper bound of 18. a. What is th

e height of the density function f(x)
Mathematics
2 answers:
Triss [41]3 years ago
7 0

Answer:

Height of density function is equal to \dfrac{1}{22}.

Step-by-step explanation:

Given that

Lower bound= -4 and upper bound=18 and we need to find height of density function.

We know that height ofProbability density function given as

Height =\dfrac{1}{Upper\ bound -lower\ bound}

Now by putting the values in the above formula we will get

Height =\dfrac{1}{18 -(-4)}

Height =\dfrac{1}{22}

So height of density function is equal to \dfrac{1}{22}.

shutvik [7]3 years ago
5 0

Answer:

The  height of the density function is \frac{1}{22}

Step-by-step explanation:

Given : A random variable X follows the continuous uniform distribution with a lower bound of −4 and an upper bound of 18.

To find : What is the height of the density function f(x)?

Solution :

According to question,

The height of the density function is given by,

f(X)=\frac{1}{b-a}

Where, a is the lower bound a=-4

b is the upper bound b=18

Substitute the value in the formula,

f(X)=\frac{1}{18-(-4)}

f(X)=\frac{1}{18+4}

f(X)=\frac{1}{22}

Therefore, The  height of the density function is \frac{1}{22}

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Aleks04 [339]

Answer:

x = 2, y = 7, z = 12

Step-by-step explanation:

x + y - z = -3 (1)

3x - y + z = 11 (2)

x - 4y + z = -14 (3)

add (1) and (2)

4x = 8 x = 2

add (1) and (3)

2x - 3y = -17

2(2) - 3y = -17

-3y = -17 - 4

-3y = -21

y = 7

Find z using any equation

x + y - z = -3

2 + 7 - z = -3

9 - z = -3

z = 12

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3 years ago
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il63 [147K]

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Step-by-step explanation:

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3 years ago
K=mv^2/2 solve for v
matrenka [14]

Answer: v=\sqrt[]{\frac{2K}{m} }

Step-by-step explanation:

K=\frac{mv^2}{2}

First, multiply by 2 to get rid of the 2 in the denominator. Remember that if you make any changes you have to make sure the equation keeps balanced, so do it on both sides as following;

2*K=\frac{mv^2}{2}*2

2K=mv^2

Divide by m to isolate v^2.

\frac{2K}{m}=\frac{mv^2}{m}

\frac{2K}{m} =v^2

To eliminate the square and isolate v, extract the square root.

\sqrt[]{\frac{2K}{m} }=\sqrt[]{v^2}

\sqrt[]{\frac{2K}{m} }=v

let's rewrite it in a way that v is in the left side.

v=\sqrt[]{\frac{2K}{m} }

4 0
3 years ago
In triangle abc, cos A= -0.6. Find A and Tan A
Tresset [83]

Answer:

Part 1) A=126.87^o

Part 2) tan(A)=-\frac{4}{3}

Step-by-step explanation:

we have

cos(A)=-0.6

The cos(A) is negative, that means that the angle A in the triangle ABC is an obtuse angle and the value of the sin(A) is positive

The angle A lie on the II Quadrant

step 1

Find the measure of angle A

cos(A)=-0.6

using a calculator

A=cos^{-1}(-0.6)=126.87^o

step 2

Find the sin(A)

we know that

sin^2(A)+cos^2(A)=1

substitute the value of cos(A)

sin^2(A)+(-0.6)^2=1

sin^2(A)=1-0.36

sin^2(A)=0.64

sin(A)=0.8

step 3

Find tan(A)

we know that

tan(A)=\frac{sin(A)}{cos(A)}

substitute the values

tan(A)=\frac{0.8}{-0.6}

Simplify

tan(A)=-\frac{4}{3}

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Rek has a rope 135 feet long. He cuts it into 3 pieces. The 2nd piece is twice as long as the 1st piece. The 3rd piece is 3 time
AnnyKZ [126]
(2*3*1)=6

135/6=22.5

1st = 22.5 ft

2nd= 45 ft

3rd = 67.5 ft

add it up and you get 135 feet
3 0
3 years ago
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