Ava and jiao each swam a two-lap swimming race. ava took 31.49 seconds to finish her first lap and 30.03 seconds to finish her second lap. jiao finished her two-lap swimming race 1.76 seconds faster than ava. what was jiao’s total swimming time, in seconds, after she finished her two-lap race?

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −