It depends the type of class you will be teaching. But if you really want to be a secondary school math teacher, master the algebra 1 and 2, geometry, trigonometry and statistics...A good teacher explains to those who cannot understand and understands those who cannot explain:)
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Obtuse in geometry means an angle whose measure is greater than 90 degrees but less than 180 degrees.
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There's a shorter  way, that is to find the x- and y-intercept: 1. To find x-intercept, let y be 0. 2x=4   x=2, so x-intercept is at (2,0) 2. To find y-intercept let x be 0. Y=4, so y-intercept is at (0,4) The purpose of finding the coordinates of a line is to plot the … Read more
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Express 5% in decimal, it becomes 0.05 Multiplying 400,000 by 0.05, you'll get 20,000.
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The Dragon voted up Aisha's answer
The above question is a mathematical equation and its solution is very simple. 5x-7=-19+6x Adding all the coefficients of x and the variables we get: 5x-6x=-19+7 -x=-12 x=12 is the answer