A washer and a dryer cost $639 combined. The washer costs $61 less than the dryer. What is the cost of the dryer?

Find cot x if sin x cot x csc x = √2

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i

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?