If
cos
⁡
θ
=
4
27
cosθ=
27


4

and angle
θ
θ is in Quadrant I, what is the exact value of
tan
⁡
2
θ
tan2θ in simplest radical form?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?