8% = 0.08
150 x 0.08 = 12
Answer = 12
Answer: 1.9
Step-by-step explanation:
Question 11
9.88 rounds to 10
5.2 rounds to 5
10/5 = 2
Let's V the speed of the girl in step
v the speed of the escalator in step
L the length between ground and floor.
V*60+v*60=L ==> V+v=L/60
V*90-v*90=L ==> V-v=L/90
2V=L(3+2)/180
==>V=5L/360
Time to climb (in step) with v=0 (escalator standing still)
V*t=L==> t=L/V=L/(L*5/360)=72
The girl will count 72 steps.
1/8 , .., 1/4
1/8 = 2/16
1/4 = 4/16
2/16 , 3/16 , 4/16
Answer:
- D. 5.7 km/h north and 5.8 km/h west are instantaneous velocities, while 8.1 km/h northwest is the average velocity.
Step-by-step explanation:
We are given directions and position change.
This is about the velocity, the speed doesn't take into account the direction.
We also see the change in the velocity. The numbers give us instantaneous velocities and the displacement is the average velocity as the sum of vectors.
Considering the above explanation, correct choice is D.
