Answer:
fred = 45 books
sally has 27 times more book than fred
sally = 45 X 27
= 1215 books
Volume of the carton = 1000 cubic inches. Dimensions of a carton are 10"×10"×10"
The answer is D. THe last one.
The x coordinate of S will be 1/2 * 2a = a.
and since the half triangle is 30-60-90 the y coordinate will be sqrt3 a
so S is (a , sqrt3a)
X = 650 + 60t
The cheetah must arrive at the same place at the same time:
x = 90t
650 + 60t = 90t
30t = 650
t = 650/30 ≅ 21.7 s
It takes the cheetah a little more than 20 s running at 90 ft/s to reach the moving antelope, so assuming the antelope can maintain its speed of 60, it is safe.
