Domain 2 Flashcards
what is the formula for area of a trapezoid?
h(b1 + b2)/2
what is the formula for surface area of a circle?
2πr
what is the formula for surface area of a cylinder?
2πrh + 2πr^2
what is the formula for surface area of a sphere?
4πr^2
what is the formula for volume of a sphere?
(4/3)πr^2
when do ou have to reverse the direction of an inequality symbol?
if you mulitply or divide by a negative number
what are the steps for factoring polynomials?
identify a monomial factor
find the numbers whose product is the last term and sum is the coefficient
assign the factors accordign to the middle term
what should be done if a monomial factor cannot be identified in a polynomial?
use double parenteses and factor the first terms.
what is a quadratic equation?
an equation that can be written:
ax^2 + bx + c
what are the steps for solving a quadratic equation?
put all terms on one side an a zero on the other
factor
set each factor equal to zero
solve
what is the formula for the volume of a cylinder?
πr^2h