Answer:
53 1/3 km/h
Step-by-step explanation:
average speed = (total distance)/(total time)
average speed = distance/time
time * average speed = distance
time = distance/(average speed)
250 km at 75 km/h
distance = 250 km
time = (250 km)/(75 km/h) = 3.33333... hours
350 km at 70 km/h
distance = 350 km
time = (350 km)/(70 km/h) = 5 hours
200 km at 30 km/h
distance = 200 km
time = (200 km)/(30 km/h) = 6.6666... hour
total distance = 250 km + 350 km + 200 km = 800 km
total time = 3.33333... hours + 5 hours + 6.66666... hours = 15 hours
average speed = (total distance)/(total time)
average speed = (800 km)/(15 hours)
average speed = 53 1/3 km/h
Answer:
incenter
Step-by-step explanation:
The point of intersection of the three angle bisectors of a triangle is the incenter.
Answer:
m=120and k =60 hgfdfghjjh
A. I did the steps on the paper
We're given an arithmetic sequence 
that starts with 
and a common difference between terms of 
. Recursively, this sequence is given by
We can find an explicit formula for the 
-th term 
:
and so on, with the general pattern of
We're given that the sum of the first 
consecutive terms is
Recall that
So we solve for :
(there are two solutions, but only one is a positive integer)
