Determined which ratio forms a proportion with eight over three my finding a common multiple

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20