Question

Need help with 10 questions.

Answer 1

multiply the first equation by 2

Answer 2

then add the resulting equation with the second equation

Answer 3

u will get value for y

Answer 4

good

Answer 5

yes

Answer 6

Cassandra: Please check your result by substituting it back into the original equation. If the latter is then true, your result is correct; otherwise it is not. You would be far better off learning how to check your own work than by asking others to check it for you.

Answer 7

In this case, you have found a point (that is, a coordinate pair, with x-value and y-value). To do a thorough check, substitute your x- and y-values into both of the original equations. If both equations are then true, you have found the solution.

Answer 8

i dont think its a.

Answer 9

multiply the first equation by 2 and try to see

Answer 10

You and everyone else would benefit were you to explain your reasoning / show your work.

Answer 11

In that case it will be very hard for me or anyone else to provide you with specific feedback. What's important here is not whether or not the question requires that you rewrite your problem here on OpenStudy but whether you understand the math involved. I deal in reasoning and understanding of principles, not in guesswork.

Answer 12

Regarding Problem #2: Which of the two variables should we eliminate first? and why?
One is easier to eliminate than the other.