3.if you throw a ball horizontally while standing on roller skates, you will roll backward with a momentum that matches the momentum of the ball. would you roll backward if you go through the motions of throwing the ball, but instead, hold onto it?

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

1.3 and 1 1/3 are both closest to 1. hope this ; )