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Questions and answers by
Brooke & Ashland
Questions (1)
What do i avoid doing before i open a bird's cage???
do i close all doors and windows so the bird can't escape OR do i turn on
1 answer
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Answers (2)
x = 12 x' = -13/10 y' = ? when x = 4 m = 2 y = ? Use proportiions. 12 / 2 = 4 / y 6 = 4 / y 2/3 = y 12 / x = 4 / y Differentiating both sides with respect to time, we get: -12 / x^2 * x' = -4 / y^2 * y' -12 / 4^2 * x' = -4 / (2/3)^2 * y' -12 / 16 * x' = -9
4x(x - 5) - 5x(x - 4) = -1 4x*x - 4x*5 - 5x*x - 5x*-4 = -1 4x^2 - 20x - 5x^2 + 20x = -1 -x^2 = -1 x^2 = 1 x = 1, x = -1 So the answer is x = 1 or x = -1. I hope that helps! :)
