On a number line what is the distance between -61.5 and -23.4?

What is the prime factorization of 230

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

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?