There were 6 students running in a race. How many different arrangements of first, second, and third place are possible?
1 answer:
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Answer:
a) and
, b)
and
, c)
and
, d)
and
, e)
and
, f)
and
, g)
and
, h)
and
.
Step-by-step explanation:
Each system is solved as follows (Cada sistema es resuelto como sigue):
a) and
b) and
c) and
d) and
e) and
f) and
g) and
h) and
9514 1404 393
Answer:
8 units
Step-by-step explanation:
Displacement is the area under the velocity curve. The area of interest is in the shape of a trapezoid, so we can use the formula ...
A = (1/2)(b1 +b2)h
to find the area.
Here, b1=3, b2=1, h=4, so the area is ...
A = (1/2)(3 +1)(4) = 8
The displacement is 8 units in the time from t=1 to t=4.
