2, 3, 5, 7, 11, 13, 17, 19 , 23, 29, 31, 37, 39, 41, 43, 47...
LCD - lowest common denominator
Cross out any prime factor in the second denominator that already appears in the first denominator. then multiply the rest.
sum of all the numbers in the set divided by the number of elements in the set.
the middle value in a set containing odd numbers; a set with even numbers it is the average of the two middle terms.
the value that appears the most often in the set
ab+ac=a(b+c) OR ab-ac=a(b-c)
Differences of Squares
a^2 - b^2 = (a+b) (a-b)
Fractions or decimals less than 1 raised to a power
will result in a number smaller than the original number
two angles that form a straight line
angle is greater than 0 but less than 90 degrees
two angles form a 90 degree angle
Happens when two lines intersect, vertical angles are equal
Perimeter of a rectangle
Area of a circle
C=pi(d) or 2(pi)r
Length of an arc
S=6a^2: sum of the areas of all faces
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.