What's the formula for the area of a triangle

Ramon is a waiter. He waits on a table of 4 whose bill comes to $99.69. If Ramon receives a 20% tip, approximately how much will he receive?

What is the classification of a triangle with side lengths of 10, 10, and 9? A. Obtuse B. Acute C. Right

If Karly has 89 pennies 31 quarters and 14 dollar bills ... which of the money pays most and which pays least? (Random question I made up)

Factor the perfect square trinomial x2 - 12x + 36

The flight of a cannonball toward a hill is described by the parabola y = 2 + 0.12x - 0.002x 2. the hill slopes upward along a path given by y = 0.15x. where on the hill does the cannonball land?

Twenty-nine billion, thirty-two million in standard form

11. How is the graph of g (x) = 5x² - 2 related to the graph of f (x) = x2?

A scale drawing of a building has the scale of 0.5in : 6 ft. A wall is 30 ft long. How long will the wall be?

2 (19.6x+29.4x+576.24)

Write an equation in slope intercept form for the line with y intercept 5 and slope - 3/2