If you convert 2 kilometers to meters, will the converted amount have more or fewer units than the original?

Charles is on a 8 1/2 mile bike ride. he stops for a rest after he’s gone 5 2/5 miles. how much farther does he still have to go?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

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.