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
krok68 [10]
3 years ago
11

A helicopter and a plane can make a safe landing if at least half of its engines are working properly. Suppose that engine failu

res are independent events. Determine whether a two engine helicopter or a four engine plane is safer if the chance that an engine fails is 1 in 100?
Mathematics
1 answer:
Veronika [31]3 years ago
8 0

Answer:

I'm going to make an uneducated guess here.

I think the probability of two engines failing would be the same for either aircraft. In the instance that does happen, the helicopter doesn't fly at all and the airplane does.

I say the airplane is safer.

Step-by-step explanation:

You might be interested in
Find the lengths of two segments whose sum is 45 and whose ratio is 2:3
ohaa [14]
Let the two segments be x and y
x+y=45...1
X/y = 2/3...2
From1, y=45-x
Sub this into 2
x/(45-x)=2/3
3x=90-2X
5x=90
x=18
y=45-18=27
8 0
3 years ago
PLEASE ANSWER ASAP WILL MARK BRAINLIEST
Olin [163]

Answer:

First choice

Step-by-step explanation:

4 0
2 years ago
Find the volume of the garden shed
Leno4ka [110]

Answer:

47.3 m³

Step-by-step explanation:

The garden shed is made up of a rectangular prism and a pyramid.

<h3><u>Volume of a rectangular prism</u></h3>

\begin{aligned}\textsf{Volume of a rectangular prism}&=\sf width \times length \times height\\&=4 \times 4 \times 2\\&=16 \times 2\\&=32\;\; \sf m^3\end{aligned}

<h3><u>Volume of a pyramid</u></h3>

<u />

From inspection of the given diagram, the slant height of the pyramid is 3.5 m.  

Calculate the perpendicular height of the pyramid using Pythagoras Theorem:

\begin{aligned}\implies a^2+b^2&=c^2\\2^2+h^2&=3.5^2\\h^2&=8.25\\h&=\sqrt{8.25}\;\; \sf m\end{aligned}

Therefore:

\begin{aligned}\textsf{Volume of a pyramid}&=\dfrac{\sf length \times width \times height}{3}\\\\&=\dfrac{\sf 4 \times 4 \times \sqrt{8.25}}{3}\\\\& = 15.31883372\;\; \sf m^3\end{aligned}

<h3><u>Volume of the garden shed</u></h3>

\begin{aligned}\implies \textsf{Volume of shed}&=\textsf{Volume of rectangular prism}+\textsf{Volume of pyramid}\\&=32+15.31883372\\& = 47.3\;\; \sf m^3\;(nearest\;tenth)\end{aligned}

6 0
1 year ago
Read 2 more answers
What is the distance between -8 and -1.9 on a number line?​
Mamont248 [21]

Answer:

6.1

Step-by-step explanation:

hope this helps :D pls mark brainliest :D

3 0
3 years ago
Read 2 more answers
D-1/2=5/12 what is d??
EleoNora [17]

Answer:

d = \frac{11}{12}

Step-by-step explanation:

1) To solve for d, isolate it in the equation. So, to get rid of the -\frac{1}{2} with the d, add \frac{1}{2} to both sides.

d-\frac{1}{2}  = \frac{5}{12} \\d - \frac{1}{2} +\frac{1}{2} = \frac{5}{12} + \frac{6}{12} \\d = \frac{11}{12}

Thus, d = \frac{11}{12}.

6 0
3 years ago
Other questions:
  • Explain how you can use estimation to check that your answer is reasonable
    8·1 answer
  • In a sale all prices are reduced by 10% .What is the sale price of an article marked AED 75.
    15·1 answer
  • Every 2 days a scientist spends 12.5 hours observing dolphins and 3.5 hours observing sea lions. At this rate, how many total ho
    8·1 answer
  • The Wilsons have triplets and another child who is ten years old. The sum of the ages of their children is 37. How old are the t
    11·2 answers
  • How do I solve this equation for x?
    6·1 answer
  • What is the solution to solving 6.7x=5.2x+12.3
    14·1 answer
  • Please help due in 20 minutes!
    6·2 answers
  • Write three different expressions in any form equivalent to each given expressions below.​
    8·1 answer
  • Help????<br> Correct answer gets Brainliest.
    7·1 answer
  • WILL GIVE BRAINLIEST!!! Three flower beds overlap as shown. Bed A has 500 plants, bed B has 450 plants, and bed C has 350 plants
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!