Let ∠1, ∠2, and ∠3 have the following relationships. ∠1 and ∠2 are adjacent right angles. ∠1 and ∠3 are vertical angles. what is the measure of ∠1 plus the measure of ∠3 minus the measure of ∠2?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours