Question

Which of the numbers for n makes the following equation TRUE?
3(2n − 1) − 2n = 21
A. 4
B. 5
C. 6
D. 7

Answer 1

Hi...can you help me??????????

Answer 2

I want to be more creative.

\(\Large\color{black}{ \bf 3(2n − 1) − 2n = 21 }\)

\(\Large\color{black}{ \bf 3(2n − 1) − 2n +1= 21 +1 }\)

\(\Large\color{black}{ \bf 3(2n − 1) − (2n -1)= 21 +1 }\)

\(\Large\color{black}{ \bf 3(2n − 1) − (2n -1)= 22 }\)

\(\Large\color{black}{ \bf 3(2n − 1) − 1(2n -1)= 22 }\)

\(\Large\color{black}{ \bf 2(2n -1)= 22 }\)

\(\Large\color{black}{ \bf (2n -1)=11 }\)

\(\Large\color{black}{ \bf 2n -1=11 }\)

\(\Large\color{black}{ \bf 2n -1+1=11 +1}\)

\(\Large\color{black}{ \bf 2n =12}\)

and you know the final step..

Answer 3

Divison

Answer 4

yes

Answer 5

Would it be 6

Answer 6

yes

Answer 7

Which of the numbers for n makes the following equation TRUE?
4(n + 3) + 7n = 34
A. −2
B. 0
C. 2
D. 4

Answer 8

For this equation I am just going to provide you with the steps.

1) expand 4(n+3)
2) add like terms on the left side
3) subtract 12 from both sides
4) divide both sides by 11
there is your answer.

Answer 9

Ok.....Thx

Answer 10

I got 4?

Answer 11

No, not 4.

Answer 12

I think I did my math wrong let me check again

Answer 13

you can post the work in here, if you want :)

Answer 14

I got two choices its either 0 or -2

Answer 15

again not right.

Answer 16

So the only thing to choose from is positive 2

Answer 17

yes, that's the only correct answer.

Answer 18

Do you mind helping me with more or do you have to help someone else???

Answer 19

I have to do something else right now, online. Not openstudy-related.

Answer 20

Can you help me Wolf1728?????

Answer 21

Solve the following linear equation for x.
2x + 7 = 2(6 + x) – 4
A. x = -2
B. x = 5/2
C. infinitely many solutions
D. no solution

Answer 22

Thats my question...That I just posted

Answer 23

Solve the following linear equation for x.
2x + 7 = 2(6 + x) – 4
A. x = -2
B. x =5/2
C. infinitely many solutions
D. no solution

Answer 24

\(\Large\color{blue}{ \bf 2x + 7 = 2(6 + x) – 4 }\)

\(\Large\color{blue}{ \bf 2x + 7 =12 + 2x– 4 }\)

\(\Large\color{blue}{ \bf 2x + 7 = 2x+8 }\)

subtract 2x from both sides and you get,
\(\Large\color{blue}{ \bf 7 = 8 }\)

Answer 25

So what do you think ?

Answer 26

No solution??

Answer 27

Yes, correct. No solution.

Answer 28

What are the solutions, if any, of the following equation?
6y − 3 = −6y + 3
A. There is no solution.
B. There are an infinite number of solutions.
C. 0.5
D. 2

Answer 29

ind the solution of the linear equation.
4a - 11 = 2a + 2(a + 6)
A. a = 1
B. a = 12/11
C. infinitely many solutions
D. no solution
Thats the the correct question Sorry

Answer 30

i think it is D i am not to sure tho sorry

Answer 31

Thats ok at least you tried your best