What is equivalent to 3/15 and what is equivalent to 8/3 what is equivalent 1 & 4/6?

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Which of the following is a justification used while proving the similarity of triangles lom and mon

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?