Chapter 1: Problem 15
Solve the equation by factoring. $$x^{2}-5 x=14$$
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These are the key concepts you need to understand to accurately answer the question.
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Chapter 1: Problem 15
Solve the equation by factoring. $$x^{2}-5 x=14$$
These are the key concepts you need to understand to accurately answer the question.
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If \(P\) is a point on a circle with center \(C\), then the tangent line to the circle at \(P\) is the straight line through \(P\) that is perpendicular to the radius \(C P\). In Exercises \(67-70\), find the equation of the tangent line to the circle at the given point. \((x-1)^{2}+(y-3)^{2}=5\) at (2,5)
Determine whether the line through \(P\) and \(Q\) is parallel or perpendicular to the line through \(P=(-3,1 / 3), Q=(1,-1)\) and \(R=(2,0), S=(4,-2 / 3)\)
Simplify, and write the given number without using absolute values. $$|\sqrt{2}-2|$$
The discriminant of the equation \(a x^{2}+b x+c=0\) (with \(a, b, c\) integers) is given. Use it to determine whether or not the solutions of the equation are rational numbers. $$b^{2}-4 a c=72$$
Galileo discovered that the period of a pendulum depends only on the length of the pendulum and the acceleration of gravity. The period \(T\) of a pendulum (in seconds) is $$T=2 \pi \sqrt{\frac{l}{g}}$$ where \(l\) is the length of the pendulum in feet and \(g \approx\) 32.2 \(\mathrm{ft} / \mathrm{sec}^{2}\) is the acceleration due to gravity. Find the period of a pendulum whose length is 4 feet.
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