The Facts On File Algebra Handbook

Associative Property of AdditionWhen three numbers are added together,
grouping the first two numbers in parentheses or grouping the last two
numbers in parentheses will still result in the same SUM. For example,
(1 + 3) + 4 = 8, and 1 + (3 + 4) = 8, so (1 + 3) + 4 = 1 + (3 + 4).
See alsoSECTION IV CHARTS AND TABLES.

Associative Property of MultiplicationWhen three numbers are multiplied
together, grouping the first two numbers in parentheses or
grouping the last two numbers in parentheses will still result in the
same PRODUCT. For example, (2 · 3) · 4 = 24, and 2 · (3 · 4) = 24,
so (2 · 3) · 4 = 2 · (3 · 4).
See alsoSECTION IV CHARTS AND TABLES.

average (mean)SeeMEAN.

axes More than one AXIS.

axiom (postulate)A statement that is assumed to be true without PROOF.

Axiom of ComparisonFor an y two quantities or numbers, for example, aand b,
one and only one condition can be true; either a<bor a=bor b<a.

axis An imaginary straight line that runs through the center of an object,
for example a CIRCLEor a cylinder.

axis of symmetry of a parabolaThe VERTICAL LINE, or AXIS, which runs
through the VERTEXof a PARABOLA, around which the points of the
curve of the parabola on either side of the axis are symmetrical.

bar graph (bar chart)A chart that uses RECTANGLEs, or bars, to show how
the quantities on the chart are different from each other.

base 1. In an EXPRESSIONwith an EXPONENT, the base is the number
that is multiplied by the exponent. For example, in the
expression 5^2 , 5^3 , 5n, the base is 5.

2. In referring to a number system, the base is the RADIX.


3. In referring to a figure, such as a TRIANGLE, the base is the side
   on which the figure sits, and is usually indicated with the letter b.

bel A unit of measure of sound, named after Alexander Graham Bell,
that is equal to 10 DECIBELS.

bi- Two.

binary A number system that uses only 0 and 1 as its numbers. In a binary
system, 1 is one, 10 is two, 11 is three, 100 is four, and so on. A

Associative Property of Addition – binary GLOSSARY

Associative Property of Addition – binary GLOSSARY

b

a

Arc

Axis

Angle of elevation

Angle of depression