Resuelve los siguientes sistemas de ecuaciones, aplicando el método de reducción: x + 5y = – 21
– 2x + 3y = 3

Which is a graph of a proportional relationship?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?