For the data set 28, 29, 30, 30, 30, 40, the mean is 31. What is the mean absolute deviation? O A. The mean absolute deviation is 6. O B. The mean absolute deviation is 18. C. The mean absolute deviation is 3. D. The mean absolute deviation is 31.​

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11