Answer: 720 ways
Step-by-step explanation:
Given
A train has 1 main engine and remaining 6 train cars
If the engine is always in the front the remaining train cars can be arranged is

Answer:
choice B should be right
Step-by-step explanation:
Formula to find the arc length is:

Where, s= arc length,
r = radius of the circle
\theta = central angle in degrees.
According to the given problem, \theta= 150 and r =2.4.
So, first step is to plug in these values in the above formula to get the arc length.

=


So, arc length is
.
Answer:
1/7
Step-by-step explanation:
Answer:
y = 8.5x
Step-by-step explanation:
the amount of money (y)
amount per hour (8.5) times the hours (x)