Burt says:
i have drawn a triangle.
one side is 1" long, and it has angles of 90° and 20°.
max, you draw a triangle with the same two properties.
max says:
my triangle will be congruent to yours, because all triangles that have
those three properties must be congruent.
is max correct to say that all triangles with these properties must be congruent?
explain your answer.

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?