The diameter of a circle is 16cm by what amount must the radius be decreased in order to decrease the area by 48pi square centimeters.

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.