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Daniel [21]
3 years ago
10

Please help and explain

Mathematics
1 answer:
mr_godi [17]3 years ago
4 0
All but -1 <x <1
_____________
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Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probabil
Ahat [919]

Answer: The probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .

Step-by-step explanation:

The cumulative distribution function for exponential distribution is :-

P(X\leq x)=1-e^{\frac{-x}{\lambda}}, where \lambda is the mean of the distribution.

As per given , we have

Average tread-life of a certain brand of tire :  \lambda=\text{42,000 miles }

Now , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles will be :

P(X\leq 65000)=1-e^{\frac{-65000}{42000}}\\\\=1-e^{-1.54761}\\\\=1-0.212755853158\\\\=0.787244146842\approx0.7872

Hence , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .

8 0
3 years ago
Can someone plsss help :)
OLga [1]
Set equal to eachother
(2x+1) = 79
Subtract 1 from both sides
2x=78
Divide 2 from both sides
2x/2=78/2
X= 39
5 0
3 years ago
What is the absolute value of 3 above par
lubasha [3.4K]
The absolute value of 3 above par means any value more than the absolute value of 3. The absolute value of 3 is (+) 3 since an absolute value of a number cannot be negative. Above par means positive (+), so more than the specified value of 3. <span />
6 0
3 years ago
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Does (7, 8) make the equation y = x + 5 true?
NNADVOKAT [17]

Answer:

..

Step-by-step explanation:

no the correct point would be (7,12)

7x1=7

7+5=12

3 0
3 years ago
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Name a number that is an integer, but not whole number.
tekilochka [14]

Answer:

-1

Step-by-step explanation:

All negative integers are not whole numbers

4 0
3 years ago
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