Harold and Marion have 42 postcards together. Marion's collection has 5 times as many postcards in it as Harold's collection. How many postcards does Marion have? How many postcards does Harold have?

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo

How do you find percent change? ? i will give brainliest for the bestme i don’t understand

Gas is being pumped into a tank the total amount of gas g after amount of time t is given by the equation g= 50+20t if the total amount of gas that will fit into tank is 850 gallons how much time will take to fill the tank