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
iogann1982 [59]
3 years ago
9

Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still oper

ating with a probability of 0.70 and has failed with a probability of 0.30. What is the probability that between 25 and 30 batteries (inclusive) will last at least 8 hours
Mathematics
1 answer:
timama [110]3 years ago
5 0
<span>Binomial Problem with n = 50 and P(op) = 0.0.7

P(31<=50) = 1 - P(0<=x<=30) = 1 - binomcdf(50,0.7,30) = 1-0.0848 = 0.9152

</span>
You might be interested in
The equation of line AB is y = 2x + 4. What is the equation of a line parallel to line AB in slope-intercept form that contains
hodyreva [135]

Answer:

Step-by-step explanation:

eq. of line parallel to AB is y=2x+a

if it passes through (3,-2) then

-2=2×3+a

a=-2-6=-8

y=2x-8

7 0
3 years ago
Read 2 more answers
Hunter surveyed 200 of the students in his school about their favorite color. 66 students said their favorite color was blue. Wh
UNO [17]
33% because 66/200 is .33, and convert that to percentage by multiplying by 100
6 0
3 years ago
Simplify the expression below (assuming x and y are non-zero numbers). ​
Yuri [45]

Answer: Option 2

Step-by-step explanation:

\frac{15x^4y^-^2}{3x^2y^3}

Divide 15 by 3 and substract the variables's exponents.

5x^4^-^2y^-^2^-^3

Solve;

5x^2y^-^5

or

\frac{5x^2}{y^5}

4 0
3 years ago
Please help with this inequalities problem attached below.
Snezhnost [94]

Answer:

1) A. 5 + 2.75 * S ≤ 21

2) 5

Step-by-step explanation:

Well there is an initial price of $5 and $2.75 per stop, and she can only spend less than or equal to $21 we can make the following inequality,

5 + 2.75 * S ≤ 21,

<em>Meaning, Q.1 is A</em>

<em />

Now #2 is 5 stops because if we plug in 5 for s we get 18.75.

<em>Thus, the most amount of stops she can afford is 5.</em>

<em />

<em>Hope this helps :)</em>

6 0
3 years ago
One of the legs of a right triangle measures 13 cm and its hypotenuse measures 17 cm. Find the measure of the other leg. If nece
sammy [17]

To find the lengths of a right triangle, we can use what is called Pythagorean Theorem: a^2 + b^2 = c^2, where a and b are the legs of the triangle and c is the hypotenuse.

13^2 + b^2 = 17^2

169 + b^2 = 289

b^2 = 120

b = 11.0 cm

The length of the other leg of the triangle is 11.0 cm (rounded).

Hope this helps!

8 0
2 years ago
Read 2 more answers
Other questions:
  • To the nearest hundredth,what is the value of x ?<br> A)36.08<br> B)41.51<br> C)47.81<br> D)72.88
    6·1 answer
  • How will ik when I die
    11·2 answers
  • Please help i always give brainliets and thanks
    15·1 answer
  • Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 10 Allen's hummingb
    11·1 answer
  • The current population of Burlington, Maine, is 360 and grows at a rate of 2% per year. Which equation could be used to determin
    13·1 answer
  • Solve y+4x=12 3y=8-12x
    14·1 answer
  • Gareth has $2,000 to invest. Putting the money in a savings account at his local bank will earn him 2.2% annual interest and giv
    13·2 answers
  • HELP!!! The graph is at the top! Will mark as brainliest answer!!
    6·1 answer
  • Please help me I need ASAP
    6·2 answers
  • 6
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!