CH 16
Subject:
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Algebra
Forum reference:
Book page:
http://course-notes.org/Algebra
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Finding f(g(x))
Subject:
f(x)=x+2
g(x)=5
f(g(x))=(5)+2
f(g(x))=7
Factoring Equations
Subject:
x^2+2x-15=(x+5)(x-3)
Sin Cos and Tan
Subject:
Tags:
In a right triangle where theta is given and a side is given you can solve for anything.
To solve for the hypotenuse use the phrase SOH CAH TOA.
If the angle and the opposite are given use opposite side divided by sin of the angle. and vice versa for all other sides and angles.
Soh cah toa stands for
Sin opposite over Hypotenuse
Cosin adjacent over hypotenuse
Toa opposite over adjacent
all of these are with respect to theta.
Two step equations and inequalities
Subject:
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It takes two steps to solve an equation or inequality that has more than one operation:
Simplify using the inverse of addition or subtraction.
Simplify further by using the inverse of multiplication or division.
Remember, when you multiply or divide an inequality by a negative number, you must reverse the inequality symbol.
Distributive Property
Finding Slope
Subject:
Tags:
Finding Slope: Use the equation: m=(y2-y1)/(x2-x1) (1,1) (3,7) m=(7-1)/(3-1) m=3 slope is 3
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Solving For 'X'
Subject:
Tags:
Solving for X: X+9=12 Subtract 9 from both sides x=3
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Chapter 1.2 Chemistry Far and Wide
Subject:
The Massive Use of Algebra
Pages
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