25% decrease because if you multiply 20x.25 you get 5 and you minus the 5 from 20 books and you get 15 books
Answer:
the answer would be -2
Step-by-step explanation:
Answer:
106 ft
Step-by-step explanation:
Assuming the shadow is measured along horizontal ground.
tanθ =opp/adj = building height/shadow length
building height = shadow length(tanθ)
h = 61tan60
h = 105.65509...
13 because 40 and 25 would be to long and 8 would be to short
