1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
omeli [17]
3 years ago
8

The lifetime of a certain brand of battery is normally distributed with a mean value of 8 hr and a standard deviation of 0.8 hr

when it is used in a particular cassette player.Suppose that two new batteries are independently selected and put into the player. The player ceases to function as soon as one of the batteries fails.
(a) What is the probability that the player functions for at least 6 hr?
(b) What is the probability that the cassette player works for at most 9 hr?
Mathematics
1 answer:
AveGali [126]3 years ago
6 0

Answer:

Step-by-step explanation: o847434y3u3u44y4u5u5u5uu6

You might be interested in
In the geometric progression 1, 2, 4… what term is 512?
Levart [38]

The next term is double the previous term, so that the n-th term is given recursively by

\begin{cases}a_1=1\\a_n=2a_{n-1}&\text{for }n>1\end{cases}

This rule tells us that

a_2=2a_1

a_3=2a_2=2^2a_1

a_4=2a_3=2^3a_1

and so on, with the explicit rule

a_n=2^{n-1}a_1=2^{n-1}

for n\ge1.

If 512 is the k-th term in the sequence, then

512=2^{k-1}\implies\log_2512=\log_22^9=\log_22^{k-1}\implies9=k-1\implies k=10

8 0
3 years ago
you own seven travel books and are taking five of them on vacation. in how many ways can you select the five books you will take
Ipatiy [6.2K]
It depends on how many options you have
You multiply the total number of books you have time 5 because you can choose 5
8 0
3 years ago
Two positive integers have their Hcf as 12 and their product as 6336. The number of possible pairs for the numbers is
oksano4ka [1.4K]

the answer is 4? I am not sure

7 0
3 years ago
Read 2 more answers
What is the sum of 2.4, 3.06 and .75
Alenkasestr [34]
2.4+3.06=5.46
5.46+.75=6.21
The answer is 6.21
5 0
3 years ago
Read 2 more answers
9=x/6-1<br><br><br> what is x ?<br> sry I have to type more so this counts
Inga [223]
I think the answer is x=60
4 0
3 years ago
Other questions:
  • 15 points. Please answer as soon as possible.
    6·1 answer
  • You randomly draw a marble from a bag, record its color, and then replace it. You draw a blue marble 3 out of 50 times. What is
    7·1 answer
  • Is there important stuff I should know going into high school
    5·2 answers
  • What is 46% in the simplest formm.?
    10·2 answers
  • Describe the x-values at which f is differentiable.​
    8·1 answer
  • Write the given sentence as an equation. Tim’s age in 7 years will be three times what it was 19 years ago.
    14·1 answer
  • Whats the remainder to 5,323 ÷ 34
    5·2 answers
  • how much money would you spend if you were 2 by 4 bags of Doritos it cost $3.55 per bag show the equation how you got the answer
    11·2 answers
  • The point (3, 5) is reflected across the y-axis.
    6·1 answer
  • Find the EQUATION of the line through (-10,-12) and (-15,3). Use the form y=mx+b.​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!