Step-by-step explanation:
we see the common difference is
a2-a1 = 11x + 9 - 4x - 5 = 7x + 4
an = an-1 + (7x+4) = a1 + (n-1)×(7x+4)
for a7 we have then
a7 = 4x + 5 + 6×(7x +4) = 4x + 5 + 42x + 24 = 46x + 29
The answer to your is 100 volts
Answer:
we can't help
Step-by-step explanation:
you need to graph it and we can't export images or draw :( sorry! Good luck though! First you need to know that -9d is greater than OR equal to -90. Hope that helps?!
Given:
The recursive formulae are:
(a) 
(b) 
To find:
The explicit equation.
Solution:
A recursive formula of an arithmetic sequence is
and f(1) is the first term.
Where, d is the common difference.
The explicit formula is

where, a is first term and d is common difference.
(a)
We have,

Here, first term is 8 and common difference is -2. So, the explicit formula is



Therefore, the explicit formula is
.
(b)
We have,

Here, first term is 0 and common difference is 5. So, the explicit formula is


Therefore, the explicit formula is
.