What is the area of a triangle in square units if base =11 and height=20

A= 1/2 base x height

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827