The weight of 2 science fiction books and 1 autobiography is 5/6w pounds. what is the total weight of 4 of these science fiction books and 2 of these autobiographies?

If tana tanb=k, show that(1+k)cos(a+b)=(1-k)cos(a-b)

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250