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NikAS [45]
4 years ago
7

There is 60% chance of making $12,000, 10% chance of breaking even and 30% chance of losing $6,200. What is the expected value o

f the purchase?
Mathematics
1 answer:
oksano4ka [1.4K]4 years ago
4 0

Answer:

$5,340

Step-by-step explanation:

Given :

Making a probability distribution :

X : ___12000 ____0 _____-6200

P(X) __ 0.6 _____ 0.1 _____ 0.3

Tge expected value of the purchase si equal to the expected value or average, E(X) :

E(X) = ΣX*p(X)

E(X) = (12000 * 0.6) + (0 * 0.1) + (-6200 * 0.3)

E(X) = 7200 + 0 - 1860

E(X) = $5,340

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svlad2 [7]

Answer:

(9 x - 7 y) (9 x + 7 y)

Step-by-step explanation:

Factor the following:

81 x^2 - 49 y^2

Hint: | Express 81 x^2 - 49 y^2 as a difference of squares.

81 x^2 - 49 y^2 = (9 x)^2 - (7 y)^2:

(9 x)^2 - (7 y)^2

Hint: | Factor the difference of two squares.

Factor the difference of two squares. (9 x)^2 - (7 y)^2 = (9 x - 7 y) (9 x + 7 y):

Answer: (9 x - 7 y) (9 x + 7 y)

5 0
4 years ago
I need help ASAP PLEASE
weeeeeb [17]

Answer:

your answer should be the first one if i did my math right lol

Step-by-step explanation:

i hope it helps you out

TTm is what it looks like

7 0
3 years ago
At Carver, the number of flutes to
ryzh [129]
Assuming you mean flutes 5: clarinets 4: trumpets 3...
Question 1 Answer: There are <u>36 trumpets</u>
Question 1 Explanation: 60/5=12 (the amount it went up in ratio), then multiply 12 by each of the other ratios. If there are 60 flutes then there are 48 clarinets (4*12) and 36 trumpets (3*12). If you want to check work, you can then divide answer back by 12 and get the ratio again.

Assuming there are no other type of band instruments in Carver's band then...
Question 2 Answer:There are 50 flutes, <u>40 </u>clarinets, and 30 trumpets.
Question 2 Explanation: add the ratio then divide it by the number of band people (5+4+3=12: 120/12=10) this answer is then what you multiply for each ratio. So, flutes 5*10=50, clarinets 4*10=40, trumpets 3*10=30. 50+40+30=120. Therefore, if there are no other type of band instruments in Carver's band there are 40 people who play the clarinet (unless of course some are played by computers/robots or an amazing person can play multiple at a time.
8 0
3 years ago
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jasenka [17]

Answer: the answer is 19.6

Step-by-step explanation:

just add up by each number, for example 5.6+3 miles is 8.6 miles so just keep adding up the miles to get this answer

3 0
3 years ago
If 4/3 Z - 1/2= 0 then what is Z?
tekilochka [14]
4/3 Z - 1/2=0
4/3z =1/2
Z=1/2 x 3/4
Z= 3/8
4 0
3 years ago
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