Astack of boards is 21 inches high. each board is 1 and 3/4 inches thick. how many boards are there?

Explain how you can use the triangle sum theorem to find the measures of the angles in an equilateral triangle. the angles of an equilateral triangle are . let the measure of each angle be x. then, by the triangle sum theorem, x + x + x = 3x = ° solving for x gives x = °

Which rational number could be graphed between -4 and -5

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)