Answer:
9 hours im not really good at this but i hope i did my best ^.^ :)
Answer:

Step-by-step explanation:

express b^-4 with a positive exponent using:



Answer:
18%
Step-by-step explanation:
6840:38000*100 =
(6840*100):38000 =
684000:38000 = 18
Answer:
B
Step-by-step explanation: