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artcher [175]
2 years ago
9

Consider purchasing a system of audio components consisting of a receiver, a pair of speakers, and a CD player. Let A1 be the ev

ent that the receiver functions properly throughout the warranty period, A2 be the event that the speakers function properly throughout the warranty period, and A3 be the event that the CD player functions properly throughout the warranty period. Suppose that these events are (mutually) independent with P(A1)= .95, P(A2) = .98, and P(A3) = .80.a. What is the probability that all three components function properly throughout the warranty period?b. What is the probability that at least one component needs service during the warranty period?c. What is the probability that all three components need service during the warranty period?
Mathematics
1 answer:
inysia [295]2 years ago
6 0

Answer:

that is alot the prob. is 20

Step-by-step explanation:

You might be interested in
Convert y+7=4(x-3) standard form
True [87]

Answer:

-4x+y = -5

Step-by-step explanation:

Y+7=4(x-3)

Y+7=4x-12

+7. +7

Y=4x-5

-4x+y=-5

7 0
3 years ago
What is the ratio of the intensities of an earthquake PP wave passing through the Earth and detected at two points 19 kmkm and 4
Tamiku [17]

Answer:

The ratio of the intensities is roughly 6:1.  

Step-by-step explanation:

The intensity I() of an earthquake wave is given by:

I = \frac{P}{4\pi d^{2}}

<em>where P: is the power ans d: is the distance. </em>

Hence, the ratio of the intensities of an earthquake wave passing through the Earth and detected at two points 19 km and 46 km from the source is:

\frac{I_{1}}{I_{2}} = \frac{P/4\pi d_{1}^{2}}{P/4\pi d_{2}^{2}}

<em>where I₁ = P/4πd₁², d₁=19 km, I₁ = P/4πd₂² and d₂=46 km     </em>

\frac{I_{1}}{I_{2}} = \frac{d_{2}^{2}}{d_{1}^{2}}

\frac{I_{1}}{I_{2}} = \frac{46 km^{2}}{19 km^{2}}

\frac{I_{1}}{I_{2}} = 5.9:1

Therefore, the ratio of the intensities is roughly 6:1.  

 

I hope it helps you!    

3 0
3 years ago
I need explanation + answer.
finlep [7]

Answer:

C. 22,400.

Step-by-step explanation:

62.9% = 0.629 as a decimal fraction.

Total number of employees in small businesses in the county

= 270 * 132.

So the estimated number with less than $1000 savings

= 270 * 132 * 0.629

= 22,417.

4 0
3 years ago
Beth has already jogged 3 miles. She plans to jog less than 12 miles. Which inequality can be used to find the number of miles (
nika2105 [10]

Answer: Bilmem

Step-by-step explanation:

5 0
2 years ago
Solve for a: b − 2a = c
vlada-n [284]

Answer:

a=-\frac{c-b}{2}

Step-by-step explanation:

Solving for the variable a, given that :

b-2a=c

We can first start start by subtracting b from both sides of the equation:

-2a=c-b

Now, we can divide both sides of the equation by the coefficient of a, which would be -2:

a=\frac{c}{-2}-\frac{b}{-2}

Applying the fraction rule \frac{a}{c}\pm\frac{b}{c} =\frac{a\pm b}{c}:

a=\frac{c-b}{-2}

Then, apply the fraction rule \frac{a}{-b} =-\frac{a}{b}

a=-\frac{c-b}{2}

5 0
2 years ago
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