Yvaries jointly as x and z, and inversely as w: y=3 when x=-2, z=6, and w=12 find the constant of variation and write the equation that represents this relationship and lastly find y, when x=5, z=-4, and w=0.5 do i use this equation to find y? y=kxz/w or y=

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: