Explanation for Question 11 From the Math (No Calc) Section on the 2019 March Sat
Question 11 says an oceanographer uses the equation as is equal 2 to three over to P to model the speed. 3 As in knots of an ocean wave, 4 where P represents the period of the wave in seconds, 5 which of the following represents the period of the wave in terms of the 6 speed of the wave. So what we're doing here is we're taking this original 7 equation. Asks is equal to three, 8 over two P and we're going to try and isolate 9 P instead of us. So all we have to do is divide both sides 10 by three, over two. And of course, 11 when you're dividing by fractions, you keep change flip. 12 So this becomes two thirds S is 13 equal to P and the answer is a.