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arsen [322]
3 years ago
11

SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER TO COMPLETE THIS! NO LINKS OR

YOU WILL BE REPORTED, I WILL GIVE BRAINLIEST!!!!! I NEED THE ANSWER TODAY THIS ASSIGNMENT IS DUE TODAY

Mathematics
2 answers:
3241004551 [841]3 years ago
6 0

Answer:

x = 5 is the answer

Step-by-step explanation:

kaheart [24]3 years ago
4 0

Answer:

x = 5

Step-by-step explanation:

4x + 2y + z = 24

2x - 3y - z = 2

5x + y + 2z = 21

-----------------

Eliminate z

Add the 1st and 2nd eqn

4x + 2y + z = 24

2x - 3y - z = 2

----------------

6x - 1y = 26 eqn A

Multiply the 2nd eqn by 2, then add the 3rd.

4x - 6y -2z = 4

5x + y + 2z = 21

----------------

9x - 5y = 25 eqn B

---------------

Now you have 2 eqns in 2 unknowns, not 3.

Multiply eqn A by 5 and subtract eqn B.

30x - 5y = 130 eqn A times 5

9x - 5y = 25 eqn B

-------------

21x = 105

x = 5

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X 5,10,15,20,25 , Y 25,50,75,100,125 Based on the information in the table, what is the constant of proportionality?
Trava [24]

Answer:

5

Step-by-step explanation:

because its counting up by 5

7 0
3 years ago
What is the critical value for a chi-square test with 13 degrees of freedom at the 1 percent level of significance
vagabundo [1.1K]

Answer: 27.688

Step-by-step explanation:

The critical chi-square value \chi^2_{(df,\alpha)} depends on significance level (\alpha)  and degrees of freedom (df) .

Given significance level: (\alpha) = 1% = 0.01

Degrees of freedom (df)= 13

From the chi-square table, the critical chi-square value for df = 13 and \alpha =0.01

is \chi^2_{(df,\alpha)}=27.688

Hence, the  required critical value = 27.688

4 0
4 years ago
4x- [ x +2 ] + 6 = 2 [ 3x +8 ]
slava [35]

Answer:

x=-4

Step-by-step explanation:

4x-(x+2)+6=2(3x+8)

4x-x-2+6=6x+16

3x+4=6x+16

4=6x-3x+16

4=3x+16

3x=4-16

3x=-12

x=-12/3

x=-4

7 0
3 years ago
Day 1 Michael ran 5 miles day 2 Michael ran 2 miles day 3 Michael ran 7 miles day 4 Michael ran 3 miles how many more miles did
Nuetrik [128]

Answer:

5 And there is extra info.

Step-by-step explanation:

Day 3= 7 miles.

Day 2=2 miles.

7-2= 5

6 0
4 years ago
-3 + 8n = -5<br> what is n?
nirvana33 [79]
Click link above for the answer
7 0
3 years ago
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