The melvilles sells records at a flea market every saturday. on 4 saturdays in june, they had a profit of $30,lost $20,lost $40,and had a profit of $60.how much was their profit or loss in june?

Is the figure congruent? yes or no?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?

The interior angles formed by the sides of a hexagon have measures that sum to 720°. what is the measure of angle a? enter your answer in the box. m∠a= °