Prove that any ring r in which the two operations are equal (that is, a + b = ab for all a, b e r) must be the trivial ring r = {o}

If m∠c = 147°, determine m∠e. 147° 57° 33° 180°

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.

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)