Answer:
The answer is B
Step-by-step explanation:
r = c/2π
c = 16π
r = 16π/2π
= 8
Answer:
0.6
Step-by-step explanation:
Positive is right and Negative is left. Move from 0 right to 1.4 and then move left 0.8 units to end up at 0.6
Answer:
Increased by 5%
Step-by-step explanation:
Let at the beginning the student's score be
points.
At first, it increased by 40%. So, the new score is

Then it decreased by 25%, so the new score is

At the beginning of a month the score was
and at the end of that month the score was
. Since
the score increased by 