12 toys. Dividing 15 by 60 equals 4 so 4 tots in a hour. Then multiple the 4 toys an hour by 3 hours.
Answer:
3.9 mi/h
Step-by-step explanation:
If the boy is rowing perpendicular to the current, the two vectors form a right triangle.
AB represents the downstream current, BC is the speed across the river, and AC is the ground speed of the boat
AC^2 = 2.4^2 + 3.1^2 =5.76 + 9.61 = 15.37
AC = sqrt(15.37) = 3.9 mi/h
The boat's speed over the ground is 3.9 mi/h.
Answer:
A. 16 m
B. At t = 2 and t = 6
C. 8 seconds
Step-by-step explanation:
Maximum height is at the vertex
(4,16). So maximum height is 16 m at t = 4
The rocket is at a height of 12m at two distinct times:
At 2 seconds and again at 6 seconds
The rocket is in air when the height is not zero, I.e between t=0 and t=8
8-0 = 8 seconds