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vodka [1.7K]
3 years ago
13

The duration of a light bulb before it burns out follows an exponential distribution averaging 8 months. You are asked: 1) Calcu

late the probability that a randomly selected bulb has a life of between 3 and 12 months. 2) Calculate the probability that a light bulb, which has lasted more than 10 months, will last more than 25 months.
Mathematics
1 answer:
ludmilkaskok [199]3 years ago
6 0

Answer:

The bulb will last less than 800 hours is 0.550

Step-by-step explanation:

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Answer:

What is the question?

Step-by-step explanation:

6 0
2 years ago
If you need 192 beads to make a necklace and bracelet and it takes 5 times more beads to make necklace than bracelet. How many b
Rasek [7]
192 = total beads

necklace + bracelet = 192

Let x equal the number of beads 

bracelet = 5x
necklace = x

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x = 32

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3 0
2 years ago
Find the circumference of a circle with an area of 676pi
saveliy_v [14]

Answer:

The circumference of the circle is 52π

Step-by-step explanation:

To solve this exercise we first have to calculate the radius of the circle, for this we will use the formula of area of ​​a circle and we will clear the radius

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r = radius

a = π * r²

we clear r

r = √(a/π)

now we replace the known values

r =  √(676π/π)

r = √(676)

r = 26

now we use the formula to calculate the circumference of a circle

c = π * 2r

c = π * 2 *  26

c = 52π

The circumference of the circle is 52π

6 0
2 years ago
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What is the value of x and y?
kramer
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What is the solution to the equation sqrt n= sqrt 3n-3 +1?​
inna [77]
The answer would be n = 1
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