Tứ giác ABCD AI phân giác góc A ( I thuộc DC
CI=BC và DC=AD+BC
a ABCD là hình thang
b BI phân giác góc B

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Which of the following best describes the figure?