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I am here... again
Which of the following shows the length of the third side, in inches, of the triangle below? A right triangle is shown. One side of the triangle is labeled as 25 inches. The height of the triangle is labeled as 15 inches. 20 inches Square root of 850 inches Square root of 10 inches 40 inches
Use pythagorean theorem
Please allow the poster to do the algebra themselves.
okay, I will stop
As hetero mentioned \[15^2 +x^2=25^2\] so you need to solve for x here first
Well first thing, how do you get x^2 on its own?
i reall dont know
The formula is what ever, but you must understand what it means and how to find the variables. In the equation \[a^2+b^2=c^2\] c is the longest side often called the hypotenuse, and a and b are the legs of the triangles. |dw:1438608431801:dw|
Ok when we do algebra, to isolate a variable we often use the opposite operation of what already exists and do it to both sides. So we have \[15^2+x^2=25^2\] and we want x^2 on it's own, so lets start off by moving the 15^2 to the right side, and remember what we do to one side we must also do the other. |dw:1438608573299:dw|