The perimeter of the traingle below is 8x-6

What could explain what happened when the time was equal to 120 minutes

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

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