Determine whether the pair of solids are similar congruent or neither figures are not necessarily drawn to scale

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

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?

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.