Apublic park is in the shape of a triangle. the sides of the park that forms the base of the triangle is 200 yd long. and the area of the park is 7500 yd squared. what is the length of the side of the park that forms the height of the triangle?

Can someone show me step by step how to do this?

For the sequence [tex]a_{n} = 2n/(n+1)[/tex], what is the value of [tex]a_{10}[/tex]

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?