Tom bought 9 new baseball trading cards to add to his collection. the next day his dog ate half of his collection. there are now only 25 cards left. how many cards did tom start with? put it in a two step equation

Polygon abcd is a parallelogram, and m? abc = 127°. the length of is 10 units, and the length of is 5 units. the perimeter of the parallelogram is units, and m? bcd is °

An amusement park manager determined that about 23 of all customers would wait in long lines to ride the new roller coaster. which simulation could not be used to answer questions about whether a customer would wait?

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.