What is a density of an object that has a mass of 100g and a volume of 20cm3

What is the distance between (–2 1/2,-3) and (1, –3)?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.