Answer:
5m^2-2m
Step-by-step explanation:
2m^2-2m + 3m^2
5m^2-2m
You’re answer would be -2a^2 + 48 - 6a^4
I think it's 0.5. Because 1/10 is 0.1 and if you multiply that by 0.05 or even just move the decimal over one place you get 0.5.
Let x be the value of the third term.
Since it's a geometric sequence, then:
Third term/Second term = Fourth term/Third term
x/20 = 11.25/x
Cross multiplication:
x^2 = 225
x = 15
So since the ratio is constant, then it is
x/20 = 15/20 = 3/4
So the common ratio is 3/4 or 0.75.