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dmitriy555 [2]
3 years ago
9

The time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with . Round your an

swers to 4 decimal places. (a) What proportion of fans will last at least 9000 hours?
Mathematics
1 answer:
IRISSAK [1]3 years ago
5 0

Answer:

Step-by-step explanation:

Assuming the decay factor, m = 0.0005

f(x) = 1 - e^{-mx}

f(9000) = 1 - e^{-0.0005*9000} =   1 - 0.0111 = 0.99

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nalin [4]

answer 22

beqause parallelograms are 180 ° = A + B = 90 ° AND AND C + D = 90° AND B = C , A= D then

A + B = 90° A= 68 THEN 68 + B = 90° = B = 90 ° - 68 ° = 22°

4 0
3 years ago
I need help urgently!! I’ll make you brainliest!!
guajiro [1.7K]

Answer:

SQUARE= 108 blocks

CIRCLE= 97.97

# OF BUNDLES= 2.05, 3

Step-by-step explanation:

square- find perimeter

  • 22.5 x 4= 90ft
  • 90ft/10inches
  • convert 90 ft to inches> 90 x 12= 1080/10= 108

circle-

  • find the circumference= c=2piR
  • 2x3.14x13=81.64
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number of bundles = 205/100 =2.05, so 3

6 0
3 years ago
Fraction of ratio 4 : 5
vladimir1956 [14]
It is 80% because 4/5
3 0
3 years ago
There are 30 students in the school chorale, and 12 of these students can stay after school today to help prepare the stage for
gtnhenbr [62]
Well it would be 12/30 but it could divide by 2 which equals 6/15 which can be divided by 3 which equals 2/5 so the answer 2/5
8 0
3 years ago
Keith won a cash prize in an art competition. He gave his mother 2/5 of the money he won. Of the remainder, 1/4 was given to his
USPshnik [31]

Answer:

300 dollars

Step-by-step explanation:

Let the original amount = x

x - 2/5x  was what his mother's share looked.

5/5 x - 2/5 x

3/5x is what is left.

3/5 x - 1/4 * 3/5 x - 2/3x * 3/5 = his sister's share and his brothers

3/5x - 1/4*3/5 x - 2/3 * 3/5 = 15

3/5x * (1 - 1/4 - 2/3) = 15

3/5 x 5/60 = 15

15 / 300 * x = 15

1/20  x = 15

x = 15 * 20

x = 300

7 0
3 years ago
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