Ab-6c=17d please help it’s for this quiz and i can’t get this question wrong

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Which of the following circles have their centers on the x-axis? check all that apply.

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?