Statistics
What is the probability of something that already happened?
100%
What is a fraction?
T/F any 2 points can create a straight line.... general formula for slope using 2 points (x1, y1) and (x2, y2)
True m= delta y/ delta x = (y2-y1)/ (x2-x1)
General formula for perimeter
xa * xb
xa+b
What is the probability of something never happening?
0
How to multiply fractions?
Two lines are parallel- it means that their slopes....
are the same
Formula for area of: rectangle/square, triangle, (circle)
R= l*w, T= (bh)/2, C= pi*r^2
xa/ xb
xa-b
Range of probability
How to divide fractions?
a/b / g/h = a/b * h/g
Two lines are perpendicular it means their slopes are....
negative reciprocals of each other
Volume of Rectangular prism
V= l * w * h
x1/a
aroot(x)
What is the general definition of probability?
# desired outcomes / # total outcomes
How to add/subtract fractions?
a/b + c/d = (ad+db)/ bd
What is slope intercept form? Which term is slope? Which term is the y- intercept? Create some context for a line
y = mx + b ;m= slope ;b = y intercept
What are the conditions for the Pythagorean theorem?What is the Pythagorean theorem?
* right triangle
* c^2 = a^2 + b^2
x-a
1/xa
Mean, Median, Mode, Range
Average, 'middle number', most frequent number, biggest - smallest
What do I have to multiply a fraction by to get 1?
How to convert a line in standard form to slope intercept?
solve for y- ie Ax+By = C so y = (C- Ax)/B
What does it mean when 2 shapes are similar?
They are proportional
(x/y)n
xn/yn