On January 1, 2020 the high temperature was 63 degrees fahrenheit in Oakley, California. The low in the evening was -30 degrees. What is the difference between the two temperatures? (only type the number)

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

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?