Ben's 8th grade math

Cicumference of Circle

2 pi r

scientific notation

A method of writing or displaying numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10.

rational number

A number that can be written as a fraction

Integer

All whole numbers (both positive and negative) and zero.

Irrational Number - Define

Cannot be written as fractions. Common ones are some square roots, cube roots, and pie

congruent

Having the same size and shape

Volume of a cube formula

L•W•H

whole numbers

Natural numbers ( counting numbers) and zero; 0, 1, 2, 3...

slope formula

Rise over run

Triangle Inequality Theorem

The sum of the lengths of any two sides of a triangle is greater than the length of the third side.

complementary angles

Two angles whose sum is 90 degrees

Volume of a cylinder

V=πr²h

Volume of a cone

V=πr²h/3

scalene triangle

a triangle with no congruent sides

independent variable

a variable (often denoted by x ) whose variation does not depend on that of another.

Pathagorean Theorem

a²+b²=c²

simplified fraction

fraction in its simplest form

Translation

means Moving ... ... without rotating, resizing or anything else, just moving

constant of proportionality

the constant value of the ratio of two proportional quantities x and y

y-intercept

where the line crosses the y axis (b)

linear equation formula

y = mx + b (x is always = 0)