The relevant rules of exponents are
.. (t^a)^b = t^(a·b)
.. t^a·t^b = t^(a+b)
You have
.. (t^-4)^-9·t^2
.. = t^((-4)*(-9) +2)
.. = t^38 . . . . . . . . . . . selection C
Number 7 is a. 0.013
number 8 is c.3
_
5
Answer:
Step-by-step explanation:
Given
time taken by Carlos to cycle is 
For case (1)
Average speed 
For 
Distance traveled 
Therefore Carlos might not be able to cover 6 miles with average speed of 16 ft/s
(2)
for 0.5 hr
distance traveled

Therefore Carlos might be able to cover more than 6 miles with 
Answer:
They educated people. They cared for sick villagers. They helped feed people who lived in poverty.
Step-by-step explanation:
I just got it correct.
Hope this helps! ^^
Sorry that I probably didn't help you in time!