quant Flashcards
(50 cards)
length of an arc
2π(r)*(angle measure/360)
area of a sector
π(r²)*(angle measure/360)
formula for: volume of a 3D object
lengthwidthheight
perfect squares can only end in what numbers?
0, 1, 4, 5, 6, 9
0!
1
(x+y)²
x² + y² + 2xy
(x-y)²
x² + y² - 2xy
x² + y² + 2xy
(x+y)²
(x-y)²
x² + y² - 2xy
(x+y)(x-y)
x² - y²
formula for: probability of A or B
P(A or B) = P(A) + P(B) - P(Both)
(a/b)² =
a² / b²
if 0 < x < 1,
then it must be true that..
x²< x < √2
How many ways can you add/subtract numbers to get an odd number? What types of numbers are they?
only one way to get an odd number through addition/subtraction
even + odd = odd
How many ways can you multiply/divide numbers to get an odd number? What types of numbers are they?
1 for multiplication:
odd * odd = odd
2 for division:
odd / odd = odd
even / even = even or odd
formula for division/remainders
`x/y = quotient + remainder/y
number divisible by 8
if the last 3 digits can be cut in half 3 times
special right triangles & their sides
45 - 45 - 90
x - x - x√2
30 - 60 - 90
x - x√3 - 2x
triangle triples
3 - 4 - 5
5 - 12 - 13
8 - 15 - 17
divisible by 4
if the last two digits can be cut in half twice
divisible by 9
If the sum of the digits is divisible by 9
(xᵃ)(xᵇ)
(xᵃ⁺ᵇ)
(xᵃ)ᵇ
xᵃᵇ
(xᵃ)(yᵃ)
(xy)ᵃ
