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
NeX [460]
3 years ago
12

The National Aeronautics and Space Administration (NASA) purchased a new solar-powered battery guaranteed to have a failure rate

of only 1 in 20. A new system to be used in a space vehicle operates on one of these batteries. To increase the reliability of the system, NASA installed three batteries, each designed to operate if the other batteries in the chain fail. If the system is operated in a practical situation, what is the probability that all three batteries would fail
Mathematics
1 answer:
Reptile [31]3 years ago
5 0

Answer:

The probability that all three batteries would fail is given as:

= 0.000125

Step-by-step explanation:

Given that the probability of the new battery failing = 1/20 or 0.05,

Therefore, the probability that all three batteries would fail is given as:

= Probability of battery A failing * Probability of battery B failing * Probability of battery C failing

= P(A)*P(B)*P(C)

= 0.05 * 0.05 * 0.05

= 0.000125

You might be interested in
You roll two number cubes.
Arte-miy333 [17]
B. Rolling an even or not on the first says nothing about the second dice
7 0
2 years ago
Read 2 more answers
I need help with this question. Question is in image below. ​
ExtremeBDS [4]

Answer:

A. Answer is 2263.

Checkpoint 1 is -86 Checkpoint 4 is 2177

Subtract -86 from 2177....2177-(-86)   

=2263

2263 is how much higher checkpoint 1 (-86) is from checkpoint 4 (2177)

B. 239 FEET.

the altitude of the hill must be subtracted by the depth of the ckeckpoint(2)(-189)

therefore the altitude of the hill comes out to be 428-189=239feet.

therefore,the actual altitude of the hill is 239 feet.

7 0
2 years ago
The area of a rectangle is 6x^2-9x-15. And the length is (2x-5). Which expression best represents the rectangle’s width?
tester [92]
<h2><u>AnswEr :</u> </h2>

The area of the rectangle is of the form 6x² - 9x - 15

Factoring the given expression,

\sf \:  {6x}^{2}  - 9x - 15 \\  \\  \leadsto \:  \sf \:  3\bigg( {2x}^{2}  - 3x - 5 \bigg) \\  \\  \leadsto \:  \sf \: 3 \bigg( {2x}^{2}  - 5x + 2x - 5 \bigg) \\  \\  \leadsto \:  \sf \: 3 \bigg((2x - 5)(x + 1) \bigg)

Length of the rectangle is 2x - 5

Thus,

\leadsto \:  \sf \: (2x - 5)(3x + 3)

<h3>The breadth of the rectangle is 3x + 3 </h3>
4 0
3 years ago
A firefighter places a 29 feet ladder, so that the base of the ladder is 21 feet from the wall. What is the height at which the
Tju [1.3M]
Pythagorean theorem:
a^2+b^2=c^2 (C^2 always is the hypotenuse)

21^2+b^2=29^2
441+b^2=841
841-441=400
square root of 400 is 20
Your answer is 20
6 0
3 years ago
Nicole got a prepaid debit card with $25 on it. For her first purchase with the card, she bought some bulk ribbon at a craft sto
vagabundo [1.1K]

Answer:

34 yards of ribbon

Step-by-step explanation:

If you will subtract the $17.52 to $25 you will get 7.48 then 7.48 divide to .22 you will get 34 as the answer

3 0
3 years ago
Other questions:
  • How do you round 30.92 in a whole number
    5·2 answers
  • Alonso spins a spinner and gets a red outcome 12 times He predicts that if he repeats the experiment 1,000 times, the pointer wi
    12·1 answer
  • Find the new price for the markup given. Round to the nearest cent if necessary.
    8·1 answer
  • Buddy the elf and Jovie are planning to start running together for a few days per week. In order to estimate how far they could
    6·1 answer
  • Calculate the volume of this solid if the area of this base=707
    9·1 answer
  • Write at least three equivalent fractions for each fraction below
    10·1 answer
  • The price of a television was reduced $250 to $200. By what percentage was the price of the television reduced
    14·1 answer
  • 5x + 2 = 12<br><br> Solve the following equation. Then place the correct number in the box provided.
    6·2 answers
  • Express each percent as a fraction: <br><br><br> 86 2/3%
    9·1 answer
  • Find f((1)/(3)) if f(n)=3n
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!