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alekssr [168]
3 years ago
13

Please help I need this answered. Find x and explain. I’ll give brainliest.

Mathematics
1 answer:
lys-0071 [83]3 years ago
3 0

Answer:

I dont know what you mean by find x but if you want to find x you have to isoulat the varubal.

Step-by-step explanation:

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Need this help me will give brainllest to the one gives me all three answer
PilotLPTM [1.2K]

Answer:

the sum is -4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The market and Stock J have the following probability distributions:
denis-greek [22]

Answer:

1) E(M) = 14*0.3 + 10*0.4 + 19*0.3 = 13.9 \%

2) E(J)= 22*0.3 + 4*0.4 + 12*0.3 = 11.8 \%

3) E(M^2) = 14^2*0.3 + 10^2*0.4 + 19^2*0.3 = 207.1

And the variance would be given by:

Var (M)= E(M^2) -[E(M)]^2 = 207.1 -(13.9^2)= 13.89

And the deviation would be:

Sd(M) = \sqrt{13.89}= 3.73

4) E(J^2) = 22^2*0.3 + 4^2*0.4 + 12^2*0.3 =194.8

And the variance would be given by:

Var (J)= E(J^2) -[E(J)]^2 = 194.8 -(11.8^2)= 55.56

And the deviation would be:

Sd(M) = \sqrt{55.56}= 7.45

Step-by-step explanation:

For this case we have the following distributions given:

Probability  M   J

0.3           14%  22%

0.4           10%    4%

0.3           19%    12%

Part 1

The expected value is given by this formula:

E(X)=\sum_{i=1}^n X_i P(X_i)

And replacing we got:

E(M) = 14*0.3 + 10*0.4 + 19*0.3 = 13.9 \%

Part 2

E(J)= 22*0.3 + 4*0.4 + 12*0.3 = 11.8 \%

Part 3

We can calculate the second moment first with the following formula:

E(M^2) = 14^2*0.3 + 10^2*0.4 + 19^2*0.3 = 207.1

And the variance would be given by:

Var (M)= E(M^2) -[E(M)]^2 = 207.1 -(13.9^2)= 13.89

And the deviation would be:

Sd(M) = \sqrt{13.89}= 3.73

Part 4

We can calculate the second moment first with the following formula:

E(J^2) = 22^2*0.3 + 4^2*0.4 + 12^2*0.3 =194.8

And the variance would be given by:

Var (J)= E(J^2) -[E(J)]^2 = 194.8 -(11.8^2)= 55.56

And the deviation would be:

Sd(M) = \sqrt{55.56}= 7.45

8 0
3 years ago
What is the root of the quadratic equation <br> y= (x-4) (x+7)
pishuonlain [190]
Root are also known as what x is equal to. So, to find x you would need to set (x-4)=0 and (x+7)=0
X=4. X=-7
4 0
2 years ago
PLEASE HELPPPPPPPPPPPPPPPPPPPP ME HAS CONFUSION
crimeas [40]

Answer:

W = 76m

L = 83

Step-by-step explanation:

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3 years ago
Mai bought a magazine for $2.95. If she paid the clerk with x dollars, what would she receive back
Stolb23 [73]

Answer:

she would receive X-2.95

Step-by-step explanation:


4 0
3 years ago
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