Lisa's desk is 46 1/2 in wide. her bookcase is 30 in wide . if she puts both of them against the wall so that is 98 in wide , how much space will be left for a file cabinet

The triangles are similar. what is the value of x? show your work.

What are the soultion(s) to the quadratic equation 40- x^2=0

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.