Calculate the expected

gain or loss for Stock MNO.

Lose $25 Gain $5 Gain $45

Stock ABC 40% 15% 45%

Stock JKL 15% | 65% 20%

Stock MNO 5% 80% 15%

Answer

should be 9.5

Step-by-step explanation:

1) so use the expected value formula.

2) -25 ( lose 25 thing) times 5% plus 5 (gain 5) times 80% plus 45 (gain 45) times 15%.

3) put that into you calculator and you have you answer

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional