Question

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 , respectively, which expression will eliminate the variable x?

Answer 1

@dan815

Answer 2

what are the expressions

Answer 3

5/2 A +2/5 B
5/2 A − B
A + 2/5 B
5/2A − 2/5 B
25/10 A + 6/10 B

Answer 4

and yes dan

Answer 5

hurrrrrrry pplease

Answer 6

5/2 A − B
will leave you with a 5/2 Y in the first equation so it will cancel with equation B

Answer 7

thank you !!!!!!!!!!!! <3

Answer 8

Which values of x and y will satisfy y = 5x and 12x + 9y = 60?
x = 1, y = 19
x = 35, y = 20/19
x = 1/20 y = 1/90
x = 20/19 y = 100/19
x = 19, y = 50/19

Answer 9

sub the 5x in to u for equation 2

Answer 10

12x+9*5x=60
57x=60
x=60/57=20/19

Answer 11

-_-

Answer 12

2nd last choice stop using me now =[ u hut meh feels

Answer 13

im not using u im asking you :C

Answer 14

lol :)

Answer 15

The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b?
4, 1
-19, 40
20, 1
30, 9
-8, -29 :* your like a huge help tho i need to pass this test and your so nice to help

Answer 16

a-b=21
5a-2b=18

Answer 17

b?

Answer 18

no let me see

Answer 19

yay thats what i got <3

Answer 20

http://www.wolframalpha.com/input/?i=a-b%3D21%2C+5a-2b%3D18

Answer 21

:)