Simplify:  10^1 · 10^3

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.