Letitia has 7 1/6 of yellow ribbon, 5 1/4 yards of orange ribbon, and 5 1/6 yards of brown ribbon. how much ribbon does she have altogether? a: 18 7/12yardsb: 18 1/6 yardsc: 17 7/12 yards d: 17 3/16 yards

The trigonometric ratios sine and secant are reciprocals of each other

Math it's appreciated. (picture provided)

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −