Answer:
Average speed of train = 4x/3 miles per hour
Step-by-step explanation:
A train travels x miles in 3/4 hours
Let's find the distance train travels in 1 hour.
i.e distance travel in one hour = x /(3/4)
or distance travel in one hour = 4x/3
So,
Average speed of train = distance / time
Average speed of train = ( 4x/3 / 1 )
Average speed of train = 4x/3 miles per hour
Since bd bisects abc, the two angles are equal.
-4x+33=2x+81
-6x+33=81
-6x=48
x=-8
Answer:
Step-by-step explanation:
The sum of an alternating geometric series SUM((-1)^n*ar^n) = a/(1+r). The given series has r=2/3 and a=1. The sum will be 1/(1+2/3)= 3/5
I think it would be y=2(4x+200)
2 being it doubled and x would be to insert the twelve in to solve, and you add the 200 bacteria you already have.