Praxis 5161 Math Content Knowledge (Latest update)

Praxis 5161 Math Content Knowledge (Latest update) Percentage Formula - change/originalx100 MADSPM - Rules for exponents Multiply(add) Divide(subtract) Power(multiply) Slope Intercept Form - Y=mx+b Point Slope Form - y-y₁=m(x-x₁) Quadratic Equation - -b±√b²−4ac)/2a Discriminant - b²−4ac <0 no roots >0 2 real roots =0 1 real root Distance between two points - √(x₁−x₂)²+(y₁−y₂)² Midpoint - [x₁+x₂÷2,y₁+y₂÷2] Volume of a right cylinder - πr²h Volume of a sphere - 4/3πr³ Surface area of a sphere - 4πr² Volume of a right cone - 1/3πr²h Surface area of a right cone - πr×side ART FORMULA - I=art I=interest A=amount R=rate T=time Discount formula - Cost(rate) Distance - Speed(time) Diameter - r² Area of a circle - πr² Perimeter of a rectangle - 2(l+w) Average - Sum of terms/total number of terms Average speed - Total distance/total time Probability - Desired outcomes/total outcomes SOHCAHTOA - sin=opp/hyp cos=adj/hyp tan=opp/adj Arc length - n/360(2πr) Area of a sector - n/360(πr²) Pythagorean theorem - a²+b²=c² Area of a rectangle - L(w) Area of a triange - ½bh Perimeter of a circle (Circumference) - 2πr Area of a trapezoid - ½h(b₁+b₂) Area of a square - s² Continuous compounding interest - B=Peʳᵗ B=final balance P=principal deposit r=interest rate t=time Compounding interest annually - B=P(1+r)ᵗ P=principal r=annual interest rate t=time B=ending balance wanted Area of a cube - 6×side² Volume of a cube - side³ How to find degree measurement of an interior angle - 180(x-2)/x