4. An obtuse triangle with angles measuring 45°, 89°, and 46° Possible or impossible

and why?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

How is working backward similar to solving an equation?

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?