Answer:
B
Step-by-step explanation:
use the exponent rule of division: you just subtract the exponents if the base is the same, so 4-8=-4
Answer:
A. 
Step-by-step explanation:

Hope this helps ;) ❤❤❤
Answer:
x = 19/2 hope it goes well
1:4 you would set this up as a fraction 5/20. This gets you 1/4. Which is the same as a 1:4 ratio since ratios are the relativity between numbers