To solve this system of equations by elimination what could you multiply equation B by if you want to add the equations together and have a resulting equation with only the y variable ( the x variable is eliminated) A: 2x + 8y = 5
B: x + y = 10

answer choices :

A- -2
B- 2
C- -1/2
D- 1/2

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

i am currently in the exact same situation rn. algebra2/adv algebra is killing

step-by-step explanation:

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.