Nelson wants to plant a tree in each of three locations in his backyard. He has three kinds of trees to choose from: oak, cedar, and elm. He can choose from zero to three trees of each kind.
If Nelson randomly picks a tree for each location, the probability of him planting one oak tree, one cedar
tree, and one elm tree is 7 and the probability of him planting two oak trees and one elm tree is
10

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

What is the result of the following division?

What makes a trapezoid an isosceles trapezoid?