the coordinates of the endpoints of ab and cd are a(x1, y1), b(x2, y2), c(x3, y3), and d(x4, y4). which condition proves that ab
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Answer:
5
Step-by-step explanation:
speed=d÷t.
s=1/4=1/20
cross multiply your equation
Answer:
Step-by-step explanation:
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... ((x -2)/(x^2 +x -6))/((x^2 +5x +4)/(x +4))
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<em>Comment on simplifying rational expressions</em>
Division of fractions works the same whether you're working with numbers or polynomials (or anything else). Dividing by something is the same as multiplying by its inverse (reciprocal).
(a/b)/(c/d) = (a/b)·(d/c)
I learned this as "invert and multiply". I've recently seen it referred to as "copy dot flip", meaning you copy the numerator, use a dot symbol to indicate multipication, then flip the denominator (make its reciprocal) to become what you're multiplying by.