1 - 9
2 - 87
3 - -2
4 - -9
that’s the answers for them :), have a great day !! :)
-5=-2/9x.
x=22.5 / x=45/2
Answer:
x=13
Step-by-step explanation:
if you will substitute the value of f(x) with 5, you will get the following equation:
5=2x-21
2x=26/÷2
x=13
(I didn't know what you ment when you wrote x2, is it x square or 2X)
I really hope it was the second one, cause that's how I solved it.
Answer:
Step-by-step explanation:
i). 
= 8a²
ii). 
= 
= 
= 9a²b²c²
Answer:
-1.25
Step-by-step explanation:
Better to write this as
a(n)= -5(1/2)^(n-1)
Then the 3rd term is a(3) = -5(1/2)^(3 - 1), or a(3) = -5(1/2)^2 = -5/4 = -1.25
