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
Sveta_85 [38]
3 years ago
13

I plan to have a food sale tomorrow on campus. If tomorrow is a sunny day, I plan to sale all of food and I can get an income of

$200. If tomorrow is a heavy raining day, then I cannot sale any food, so I do not have any income. Assume I need spend $50 to prepare the food and the chance of raining tomorrow is 0.01. find my expected value of this event.
Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
5 0

Answer:

Expected value for the event = $148

Step-by-step explanation:

Expected value (EV) = Σ(Px*x)

Pr(rainy day) = 0.01

Px for rainy day = 0.01

Pr (sunny day) = 1-0.01 = 0.99

Px for sunny day = 0.99

If it's sunny, income = $200

Cost of preparation = $50

x for sunny day = 200-50 = 150

If it's rainy, income = $0

Cost of preparation = $50

x for sunny day = 0-50 = -50

EV =Σ(Px * x)

EV = (0.99*150)+(0.01*-50)

EV = 148.5+(-0.5) = 148.5-0.5

Expected value for the event = $148

You might be interested in
18+2x100= ???<br> help plz
Mandarinka [93]

Answer:

218

Step-by-step explanation:

help me on my recent

8 0
3 years ago
Read 2 more answers
10,534,341 is divisible by<br> a. 3<br> b. 9<br> c. 2<br> Explain your reasoning for your choice(s).
Katyanochek1 [597]

Answer:

a. 3

Step-by-step explanation:

We can get to know if a number is divisible by 3 if after adding all the digits of that number we get a number which is completely divisible by 3 or we can say the number appears in the table of 3.

For example: In the given number if we will add all the digits the we will get  21 and we all know that 21 is divisible by 3.

10,534,341 = 1 + 0 + 5 + 3 + 4 + 3 + 4 + 1 = 21

21 = 21/3 = 7

Other options are incorrect.

Divisibility rule for 2 : A number is said to be divisible by 2 if it's ones place ends in 0, 2, 4, 6 or 8 i.e. an even number. The given number does not satisfy this condition because it ends in 1 which is an odd number.

Divisibility rule for 9 : A number is said to be divisible by 9 if after adding all the digits of that number we get a number which is completely divisible by 9. Since the sum total of the given number is 21 which is not completely divisible by 9 we can easily infer that 9 is not the answer for this question.

3 0
3 years ago
Andrew is 61 years. Erica is 31 years old. how many years ago was Andrew’s age 4 times Erica’s age
kozerog [31]

Answer:

21 Years Ago

Step-by-step explanation:

61 - 21 = 40

31 - 21 = 10

40/10 = 4

4 0
3 years ago
Plzzzzzzzzzzzzzzzzzzzzzzzzz help it really hard
dexar [7]

Answer:

168 cm.

Step-by-step explanation:

If each book has an equal distance of 12 cm and total books are (20-6) = 14

then, total distance is (12*14) = 168.

I hope this is correct. Feel free to correct me if I'm wrong.

3 0
3 years ago
WILL GIVE BRAINLIEST!
Zielflug [23.3K]

Answer:

Collisions

Follow Newton’s Third Law which tells us that

the force exerted by body A on body B in a

collision is equal and opposite to the force

exerted on body B by body A.

During a collision, external forces are ignored.

The time frame of the collision is very short.

The forces are impulsive forces (high force, short

duration).

Collision Types

Elastic: P is conserved, K is conserved

Inelastic: P is conserved, K is NOT conserved

Perfectly Inelastic means the bodies stick together

Problem: Collisions (1993)

10. Which of the following is true when an object of

mass m moving on a horizontal frictionless surface

hits and sticks to an object of mass M > m, which is

initially at rest on the surface?

(A) The collision is elastic.

(B) All of the initial kinetic energy of the less-massive

object is lost.

(C) The momentum of the objects that are stuck together

has a smaller magnitude than the initial momentum of

the less-massive object.

(D) The speed of the objects that are stuck together

will be less than the initial speed of the less-massive

object.

(E) The direction of motion of the objects that are stuck

together depends on whether the hit is a head-on

collision.

Explain your reasoning:

Ans. Again, by conservation of momentum, if the

mass increases, the velocity must decrease. pin = pout

Problem: Collisions (1993)

11. Two objects having the same mass travel

toward each other on a flat surface, each with a

speed of 10 meter per second relative to the

surface. The objects collide head-on and are

reported to rebound after the collision, each

with a speed of 20 meters per second relative

to the surface. Which of the following

assessments of this report is most accurate?

(A) Momentum was not conserved, therefore the report is false.

(B) If potential energy was released to the objects

during the collision, the report could be true.

(C) If the objects had different masses, the report could be true.

(D) If the surface was inclined, the report could be true.

(E) If there was no friction between the objects and the

surface, the report could be true.

Explain your reasoning:

Ans. Momentum is conserved provided that an

external force not be applied. If the objects have

potential energy stored, this could provide the force.

PLEASE MARK AS BRAINLIEST!!!!!!

7 0
3 years ago
Other questions:
  • If you are using this figure to prove the isosceles triangle theorem which of the following would be the best strategy
    12·1 answer
  • B2 = 5, h = 3, and A = 12 b1=
    9·1 answer
  • A commercial jet liner hits an air pocket and drops 223 feet. After climbing 177 feet it drops another 162 feet. What is its ove
    5·1 answer
  • 8+2(1+12÷2)^2<br> Please explain
    12·1 answer
  • Irene is looking for a job cutting hair. One option is self-employment at The Greenville Salon,
    12·1 answer
  • can someone please help me with exponential models (algebra 2)? i have three word problems i really need help with. i put a pict
    13·1 answer
  • The scatter plot below represents the weight of a box of cookies based on the number of cookies in the box. A trend line shows t
    8·1 answer
  • Answer this and i will help on anything u need and give brainliest have a great day!
    14·1 answer
  • Which postulate can be used to prove the two triangles are congruent?
    10·1 answer
  • HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!