What is the product?
(2x – 1)(x + 4)

a. 2x^2 –4
b. 2x^2 + 4
c. 2x^2 + 7x – 4
d. 2x^2 –7x – 4

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?

Which is the scale factor proportion for the enlargement shown?

(05.02) mr. morris is going to save money and replace his sailboat's mainsail himself. he must determine the area of the mainsail in order to buy the correct amount of material. calculate the area of the parallelogram to determine how much material should be purchased. be sure to explain how to decompose this shape into rectangles and triangles. describe their dimensions and show your work.