Find the perimeter of the triangle with vertices D(5, 6), E (10, 9), and F(7, 11). Do not round before calculating the perimeter. After calculating the perimeter, round your

answer to the nearest tenth.

The perimeter is

units.

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.