Which of these strategies would eliminate a variable in the system of equations? 5x+3y=9
4x-3y=9

C Add the equations

Step-by-step explanation:

This way you eliminate the y variable (,when you add 3y + (-3y) the result is zero )

You  just solve for X

Once you know x ,plug it into the equation to solve for y

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

c

step-by-step explanation: