Given that AD=9 and BD=6, find the measure of BC.

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?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)