Simplify: 5a3 + 3a + 7a3-2a-4a2 A.12a²-4a²-a B.12a²-4a²+a C.2a²-4a²+a D.8a²+a​

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets, x, and the number of student tickets, y. find the solution and explain what it means. i'll you if you me

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.