Answer: 7 × ( 3^n - 1 )
Step-by-step explanation:
This is a geometric progression which has its nth term to be
Tn = ar^n- 1. Now from the question given, the sequence are 7, 21, 63, 189. This is an example of a finite sequence, To find the common ratio, you divide the second term by the first term. So
r = 21/7
= 3. , a = 7
Now to find the nth term put the values in the formula above.
Tn =ar^n-1
= 7(3)^n - 1)
= 7 × ( 3^n - 1 ).
Note, it is not 21^n - 1.
Answer:
I think its 3 1/4
Step-by-step explanation:
9 3/4 ÷ 3 = 3 1/4
Srry if im wrong
Answer:
60x + 25 + 60y
Step-by-step explanation:
60 times x plus 60 times y plus 25
The answer is y=207 hope this helps
