Evaluate the expression for the given values. 8x+2yz, where x=1/2, y = 4, and z = 2

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David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?