Which formula gives the x-coordinates of the maximum values for y = cos(x)?

Someone me what is the area of this figure? 18m 18m 8m 16m

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

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.