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
Nadusha1986 [10]
3 years ago
15

50 POINTS + BRAINLIEST

Mathematics
1 answer:
yulyashka [42]3 years ago
8 0

Answer:

522 m^2

Step-by-step explanation:

To find the surface area, we can find the area of each shape in the net.

There are 2 identical triangles and 3 different rectangles. Then we can add all of these areas together

2(\frac{1}{2} (9)(14))=126\\\\(10)(14)=140\\\\(10)(16.6)=166\\\\(9)(10)=90\\\\126+140+166+90=522

You might be interested in
Solve the formula for the indicated variable<br><br> rx + ry = 4 for r
pishuonlain [190]

Answer:

r =   4/(x+y)

Step-by-step explanation:

rx + ry = 4

Factor out r

r ( x+y) = 4

Divide each side by (x+y)

r ( x+y) /(x+y) = 4/(x+y)

r =   4/(x+y)

3 0
2 years ago
The probability that a single radar station will detect an enemy plane is 0.65.
taurus [48]

Answer:

a) We need 4 stations to be 98% certain that an enemy plane flying over will be detected by at least one station.

b) If seven stations are in use, the expected number of stations that will detect an enemy plane is 4.55.

Step-by-step explanation:

For each station, there are two two possible outcomes. Either they detected the enemy plane, or they do not. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem, we have that:

The probability that a single radar station will detect an enemy plane is 0.65. This means that n = 0.65.

(a) How many such stations are required to be 98% certain that an enemy plane flying over will be detected by at least one station?

This is the value of n for which P(X = 0) \leq 0.02.

n = 1.

P(X = 0) = C_{1,0}.(0.65)^{0}.(0.35)^{1} = 0.35

n = 2

P(X = 0) = C_{2,0}.(0.65)^{0}.(0.35)^{2} = 0.1225

n = 3

P(X = 0) = C_{3,0}.(0.65)^{0}.(0.35)^{3} = 0.0429

n = 4

P(X = 0) = C_{4,0}.(0.65)^{0}.(0.35)^{4} = 0.015

We need 4 stations to be 98% certain that an enemy plane flying over will be detected by at least one station.

(b) If seven stations are in use, what is the expected number of stations that will detect an enemy plane?

The expected number of sucesses of a binomial variable is given by:

E(x) = np

So when n = 7

E(x) = 7*(0.65) = 4.55

If seven stations are in use, the expected number of stations that will detect an enemy plane is 4.55.

6 0
2 years ago
Two consecutive numbers with a sum of -144. find the intergers
Fittoniya [83]

Answer:

impossible to solve

Step-by-step explanation:

if it's consecutive odd numbers then:

71+73

5 0
2 years ago
A number t multiplied by -4 is at least - 2/4
iris [78.8K]
-4t> -2/4
Turn sign because dividing negative
4t<-1/2
-4/2
T<-2
—
5 0
3 years ago
How did the League of Nations' failure to end the Abyssinian Crisis help lead to World War II? The failure showed that even a po
german

Answer:

C - The failure was a starting point for a buildup of aggression around the world.

Step-by-step explanation:

EDGE2021 :-)

Have a nice day! ;)

4 0
3 years ago
Read 2 more answers
Other questions:
  • For Sophia's graduation party, several tables of the same width will be arranged end to end to form a serving table with a
    12·1 answer
  • What is the simplest form of <br> 3/4 divided by 7/10
    5·1 answer
  • What is another name for 23 ten thousands
    5·2 answers
  • If g=27 and f=54degrees, find h on a triangle. a. h=15.9. b. =14.9. c. 16.9. d. 18.9
    12·1 answer
  • What are properties of rotations? Check all that apply
    5·1 answer
  • Please help ASAP! please and thank you have a great and blessed day!
    8·1 answer
  • 18. $300, 62%, 1 year
    7·1 answer
  • Why is chris so gay all the time ??
    6·2 answers
  • Determine the equation of the line passing through the point below having the corresponding
    7·1 answer
  • Heyyyyyyyyyyhiiiiiiiiiiiiii
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!