Which ordered pair is a solution of the equation? 2x+4y=6x-y2x+4y=6x−y

(this is for khan academy)

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.