Solve the systemof linear equations -3x+y=2 -x+y-4=0​

(1, 5)

Step-by-step explanation:

Substitution works well here.  Solving the second equation for x, we get x = y - 4.  Substituting y - 4 for x in the first equation results in

-3(y - 4) + y = 2.

Next, we perform the indicated multiplication and obtain:

-3y + 12 + y = 2, or -2y = -10

Dividing both sides by -2 yields y = 5.  As seen above, x = y - 4; if y = 5, then x = 5 - 4 = 1.

The solution is (1, 5)

  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.

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y