What are the possible values of x in 32x + 20 = 28x − 16x2?
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Check the picture below.
thus is at 0 = -16t² + 96t +640,
well, clearly it can't be a negative value for the elapsed seconds, so it can't be -4.
thus is at 0 = -16t² + 96t +640,
well, clearly it can't be a negative value for the elapsed seconds, so it can't be -4.
That's a right triangle with hypotenuse 3000 and the height y is the side opposite the elevation angle of 15 degrees.
We can actually compute