Adimas found the mean of her 11 math test scores for the first semester. x = ≈ 81 using 81 as the mean, find the variance of her grades rounded to the nearest hundredth. σ2 =70.4271.3677.7581.09 find the standard deviation of her grades rounded to the nearest hundredth. σ = 8.408.458.829.00

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never

What is the area of the shaded sector?