The safe load, L, of a wooden beam supported at both ends varies jointly as the width, w, the square of the depth, d, and inversely as the length, l. A wooden beam 5in. 5 ⁢ in. wide, 9in. 9 ⁢ in. deep, and 18ft 18 ⁢ ft long holds up 4007lb 4007 ⁢ lb . What load would a beam 8in. 8 ⁢ in. wide, 5in. 5 ⁢ in. deep and 17ft 17 ⁢ ft long of the same material support? (Round off your answer to the nearest pound.)

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 −