On your first four science tests, you score 82, 76, 88, and 84. what score must you get on the fifth test to get a mean score of 80?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Find the distance between (7,-6) and (-3,-9)

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle