Math Review Flashcards
1
Q
Area of a triangle
A
1/2bh
2
Q
Pythagorean theorem
A
a² + b² = c²
3
Q
Three Pythagorean triples
A
3: 4:5
5: 12:13
7: 24:25
4
Q
Special triangles: 45/45/90
A
x, x, x√2
5
Q
Special triangles: 90/30/60
A
x, x√3, 2x
6
Q
If two sides of a triangle are x and y, what must the third side be?
A
Less than x + y
Greater than |x + y|
7
Q
Area of a parallelogram
A
bh
8
Q
Area of a circle
A
πr²
9
Q
Circumference of a circle
A
2πr
10
Q
Single digit prime numbers
A
2
3
5
7
11
Q
Formula for percent change
A
Change / original • 100
12
Q
Formula for probability:
p = probability for success
n = number of tries
A
1-(1-P)^N
13
Q
Common quadratic:
(x + y)²
A
x² + 2xy + y²
14
Q
Common quadratic:
(x - y)²
A
x² - 2xy + y²
15
Q
Common quadratic:
x + y)(x - y
A
x² - y²
