A/an triangle has all three angles measuring less than 90°. a. obtuse b. right c. acute d. scalene

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)