Which of the following statements are always true of parallelograms?
it is a quadrilateral.
it has right angles.
both palrs of opposite sides are parallel.
the sides are all the same lengths.
all four angles are congruent.

At least two people have the same birthday in a school of 150 students

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.

Which expression will have the same sum as 3_8 + 1/4?