A company makes 130 bags. 41 of the bags have buttons but no zips.
47 of the bags have zips but no buttons.
31 of the bags have neither zips nor buttons.
How many bags have zips on them?

Explain the answer and how to do it

If lmn=xyz, which congruences are true by cpctc? check all that apply

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.