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nasty-shy [4]
3 years ago
13

Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

(x, y, z) =(1, -1,2)

Step-by-step explanation:

.............

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PLEASE HELP ANYONE
LUCKY_DIMON [66]
For this problem all you have to do is plug in the value that they is in parenthesis for x. If it says g (x) = x and then it asks g(5) = ?, it is saying what happens if i put 5 in for every x. in this case it would be g (5) = 5. I just replaced x with 5.

So g (-2) we sub -2 for x
g (-2) = -2 (-2)^2 + 3 (-2) - 5
= -2 (4) - 6 - 5
= -19

g (0) = -2 (0) + 3 (0) - 5
= 0 + 0 - t
= -5

g (3) = -2 (3)^2 + 3 (3) - 5
= -18 + 9 - 5
= -14
6 0
3 years ago
Pls help on timer D:
Sliva [168]
1st is 3 2nd is undefined 3rd is -3/2 4th is 1/4
5 0
3 years ago
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What is the mode of the list of numbers below? Choose ALL answers that are correct. 6, 1, 5, 2, 6, 5, 2, 6, 5
sertanlavr [38]
Rearrange the numbers in order from least to greatest:

<span>6, 1, 5, 2, 6, 5, 2, 6, 5

1, 2, 2, 5, 5, 5, 6, 6, 6

The number 1 is used once. The number 2 is used twice. Numbers 5 and 6 are used three times. 

The mode is the number that is represented most in a set of numbers. Since 5 and 6 are both represented three times, these numbers will be the mode for this set.

The answers are C. 5 and D. 6.</span>
5 0
3 years ago
A researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample
suter [353]

Answer:

The expected frequency for the cell E2,2 is = 33

Step-by-step explanation:

The given data is

Gender               | 0-30| 30-60| 60-90| 90+       Totals

Male                    | 23    |    35   |   76    |  46        180

<u> Female               |   31   |    42   |   46    |  16         135    </u>

<u>Totals                    54         77        122    62          315  </u>

<u />

The expected frequency for the cell E2,2 is :

Expected for the (30-60 box for females)   =  Total of (30-6)/ (total )* females

                                                                      = ( 77/315)135= 33

Here p= 77/315 and n= 135

therefor X= pn = 33

χ²=  (33-42)²/33= 2.455  ( for the single value of E2,2=33)

Expected for the (30-60 box for males)   =  Total of (30-6)/ (total )* males

                                                                      = ( 77/315)180= 44

χ²=  (44-42)²/44= 0.09

The critical region is  χ² (0.05) 3 ≥  χ²= 11.34

Let the null and alternate hypothesis be

H0:the number of minutes spent online per day is not related to gender

against

Ha: the number of minutes spent online per day is related to gender

The single value of χ² for E2,2 = 2.45 is less than the critical value of 11.34.  

6 0
2 years ago
If the r-value, or correlation coefficient, of a data set is 0.908, what is the coefficient of determination to three decimal pl
belka [17]
0.824.....Apex if answer changed not my fault but kinda helpful
5 0
3 years ago
Read 2 more answers
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