All categories

3 years ago

I need help for all of it

Mathematics

1 answer:

bulgar [2K]3 years ago

3 0

Answer:

1. <

2. <

3. <

4. <

5. >

6. >

7. -2, 5, 6

8. -3, 0, 9

9. -1, 1, 6

10. 1, 0, -1

11. 2, 1, -12

12. -10, -11, -12

13. 205, 50, -5, -20

14. 78, 9, -78, -89

15. 60, 0, -2, -55

16. 28, 8, 0, -8

17. 38, 37, -37, -38

18. 11, 1, -1, -111

Explanation:

When it comes to negative and positive numbers you must be careful.

For a positive number, the bigger it is is the greater it'll get

For negative numbers, as the numbers continue to increase the less the value will become.

You might be interested in

Suppose that a college determines the following distribution for X = number of courses taken by a full-time student this semeste

lidiya [134]

Answer:

$E(X) = \sum_{i=1}^n X_i P(X_i) = 3*0.07 +4*0.4 +5*0.25 +6*0.28= 4.74$ In order to find the variance we need to calculate first the second moment given by:

$E(X^2) = \sum_{i=1}^n X^2_i P(X_i) = 3^2*0.07 +4^2*0.4 +5^2*0.25 +6^2*0.28= 23.36$ And the variance is given by:

$Var(X) = E(X^2) +[E(X)]^2 = 23.36 -[4.74]^2 = 0.8924$

And the deviation would be:

$Sd(X) =\sqrt{0.8924} =0.9447$

Step-by-step explanation:

Previous concepts

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

The variance of a random variable X represent the spread of the possible values of the variable. The variance of X is written as Var(X).

Solution to the problem

For this case we have the following distribution given:

X 3 4 5 6

P(X) 0.07 0.4 0.25 0.28

We can calculate the mean with the following formula:

$E(X) = \sum_{i=1}^n X_i P(X_i) = 3*0.07 +4*0.4 +5*0.25 +6*0.28= 4.74$

In order to find the variance we need to calculate first the second moment given by:

$E(X^2) = \sum_{i=1}^n X^2_i P(X_i) = 3^2*0.07 +4^2*0.4 +5^2*0.25 +6^2*0.28= 23.36$

And the variance is given by:

$Var(X) = E(X^2) +[E(X)]^2 = 23.36 -[4.74]^2 = 0.8924$

And the deviation would be:

$Sd(X) =\sqrt{0.8924} =0.9447$

3 0

3 years ago

PLEASE HELP ME PLEASE??

BigorU [14]

Answer:

Table A is correct

Step-by-step explanation:

All you have to do is multiply the hours by 5 to get the answer.

Table B is adding not multiplying.

<em>Can I please have BRAINLIEST?</em>

4 0

3 years ago

people with severe hearing loss given a sentence and word recognition test six months after they got implants in their ears the

kirza4 [7]

That would be .82 as 82% is 82/100 so that makes the answer .82

8 0

2 years ago

Find the value of this expression if x=-1

tatiyna

Answer:

Step-by-step explanation:

-1^2+7

1+7 =8

-1 +5 =4

8/4 =2

5 0

3 years ago

please help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111 -9 2/7 - (-10 3/7) I NEED IT AS A FRACTION

mario62 [17]

8/7 exact form
or
1 1/7 mixed number form

7 0

2 years ago