Find the cross product (7, 9,6) x (-4, 1, 5). Is the resulting vector perpendicular to the given vectors?
a. -57, 43, 33); yes
b. (39,- 59,43), yes
c. (33 – 59. – 57); no
d. (33, - 57, 49); no

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters