Which statements are true for the given quadrilaterals? a. all trapezoids are quadrilaterals. all rhombuses are parallelograms. all quadrilaterals are parallelogram. all rhombuses are squares.

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?