Which of the following is a trinomial with a constant term? A. x - y + 3
B. y + x ^ 3
C. x ^ 7
D. x ^ 3 + 12x ^ 2 + x
E. x + 7y
F. y ^ 2 + 12

A) x - y + 3

Step-by-step explanation:

A trinomial is a polynomial with 3 terms, and a constant term always stays constant (for example an integer). A seems to work best.

  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.