Jonathan found a strange piece of metal. he took it to a science lab and found that the metal is 37.5% gold and 62.5% nickel. what is the ratio of gold to nickel a. 3 to 5 b. 7 to 9 c. 7 to 12 d. 9 to 15

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

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?

Solve the formula ax+ by = c for x.