Formulas Flashcards
1
Q
slope
A
(y2-y1)/(x2-x1)
2
Q
slope-intercept
A
y=mx+b
m=slope, b= y-intercept
3
Q
midpoint
A
(x1+x2/2, y1+y2/2)
4
Q
mean
A
sum of the terms/ number of terms
5
Q
speed
A
distance/time
6
Q
Probability of an outcome happening
A
of desired outcomes/ total number of possible outcomes
7
Q
Number of combinations
A
Times all the outcomes together
ex) 3 socks, 5 shoes, 6 laces
356=90
8
Q
Rectangle area
A
length x width
9
Q
perimeter
A
2L X 2W
10
Q
Rectangular solid area
A
Length x width x height
11
Q
parallelogram area
A
1/2bh
12
Q
circle area
A
πr^2
13
Q
circumference of circle
A
2πr
14
Q
area of an arc
A
2πr x (degree measure center of arc/360)
15
Q
equation of a circle
A
(x-h)^2 + (y-k)^2 = r^2
center point of circle = ( h,k)
r= radius
