Which of the following values is closest to the variance for the set of data shown below?
99,78, 56, 11, 43, 22, 16, 31, 49, 28, 37, 29, 30, 38, 34

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?