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Mice21 [21]
3 years ago
11

Solve for x: 3х + 2 = 11

Mathematics
2 answers:
Serggg [28]3 years ago
7 0

Answer:

Move all terms that don't contain  x to the right side and solve.

x = 3

Step-by-step explanation:

Y_Kistochka [10]3 years ago
3 0

Answer:

x = 3

Step-by-step explanation:

3x + 2 = 11

Subtract by 2 on both sides

3x = 9

Divide by 3 on both sides

x=3

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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
Which function is graphed?
Rufina [12.5K]

Answer:

C or d

Step-by-step explanation:

4 0
2 years ago
Marking brainliest<br> please help!!!!
never [62]
X = 4.8 cm

You have to find the height then use the height to find the x value

3 0
1 year ago
3 15/16 divided by 2 5/8Ask your question here
Alexeev081 [22]
\frac{3 \frac{15}{16}  }{2 \frac{5}{8}}  \\  \\  \frac{ \frac{63}{16} }{ \frac{21}{8} }  \\  \\ \frac{63}{16}*\frac{8}{21} \\  \\  \frac{63*8}{16*21}  \\  \\  \frac{504}{336}  \\  \\ 1 \frac{168}{336}  \\  \\ 1 \frac{168:168}{336:336} \\  \\ 1 \frac{1}{2}
3 0
2 years ago
Only answer if you know the correct answer! Thanks! :)
Komok [63]

Answer:

1. A

2. C

3. D

4. B

6 0
3 years ago
Read 2 more answers
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