Answer sometimes, always, or never
1) if 2 lines are not coplanar, then they intersect.
2) if 3 lines intersect at a point, then they are coplanar.
3) if 2 lines are parallel, then they are coplanar.

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.