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When we have a quadratic (ax2 + bx + c = 0) we can "complete the square" to solve for x. For example x2 + 8x + 7 = 0. First look at the x2 + 8x, in particular th...
36%= 36/100
Divide it by 2, the answer will be 18/50.
It can then be divide by 2 again and getting to the answer of 9/25.
Firstly, since only one equation is linear, substitution must be used. This will allow us to make a quadratic equation with one variable and solve for X and Y. To do this, I will make Y the subject of the...
Original Price x Percentage Multiplier = New Price
Percentage Multiplier = (100-20)/100 = 0.8
OP x 0.8 = £12
OP = £12/0.8 = £15
This is a classic 2-D projectile question.
The best way to solve this problem is to split the velocity into its x and y components.
In the x-direction a projectile has no forces acting on it...
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