Pump A delivers water at a rate 4 times that of pump B. If both pumps operate together, a tank with a capacity of 15000L can be filled in 20 minutes. Find the pumping rate of pump A in litres per minute. A) 750L/min
B) 600L/min
C) 450L/min
D) 150L/min

Two lines parallel to the same plane are parallel to eachother

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.