Aused bookstore will trade 2 of its books for 3 of yours. if val brings in 18 books to tr ade, how many books can she get from the store.

You must trade in 3 books to gain 2 from the store. If she brings 18 books, 18/3 shows that she can turn in 6 "groups" of 3 books. Each "group" gets her 2 books, and since 6*2=12 she can get 12 books from the store.

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )