Use substitution to solve the system of equations. y=2/3x+6 3y-2x=0

If value of cos330° is √3/2 then find tan165°.

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?