psat math
Terms
undefined, object
copy deck
-
parallelogram area? -
a*h -
ellipse area? -
(Ϭ)ab -
trapezoid area? -
(1/2)h*(b+a) -
cube volume? -
s³ -
rectangular prism volume? -
a*b*c -
cylinder volume? -
Ϭr²h -
pyramid volume? -
(1/3)bh -
cone volume? -
(1/3)Ϭ(r²)h -
sphere volume? -
(4/3)Ϭ(r³) -
ellipsoid volume? -
(4/3)Ϭ*r1*r2*r3 -
cube surface area? -
6s² -
rectangular prism surface area? -
2(ab)+ 2(ac) +2(bc) -
sphere surface area? -
4Ϭr² -
in a 45-45-90 right triangle what are side lengths -
x, x, and x√2 -
in a 30-60-90 right triangle- what are the side lengths -
x, x√3 and 2x -
if A is area of equilateral triangle with sides s, what is area of A -
A= (s²√3)¼ -
what are 2 triangle inequality theorems? -
a+b>c and a-b<c -
what is the sum of all four angles of parallelogram? -
360 degrees -
what is properties of parallelograms -
opposite sides are equal
opposite angles are equal
adjacent angles add up to 180 degrees
the diagonals bisect each other - what is the formula for the length of an arc in x degrees?
- (x/360)(2Ϭr)
- what is formula for the area of a sector formed by an arc?
- (x/360)(Ϭr²)
- what is equation for the nth term of arithmetic sequence whose common difference is d?
- A(n)= A(1) + (n-1)d
- what is equation for the nth term of geometric sequence whose common ratio is r?
- A(n)= A(1)r^(n-1)
- for systems of linear equations like what is xy if 2x+y=10 and x-y=2 what do u do?
- add or subtract the equations (xy=8)
- for solving something w/ variable in denominator what do u do
- multiply all terms by variable to get variable out of denominator
- is one a prime number
- no
- is 0 an even integer?
- yes
- what are sets?
- collections of elements or members
- what is a union of sets and what is the symbol?
-
a union of sets consists of all elements in A and B
symbol is U so AUB - what is intersection of sets and what is the symbol?
-
a set consisting of only elements that are in both A and B sets
symbol is backwards U (П) so AПB - what is solution set?
- set of numbers that satisfies the equation