Answer:
12 is the answer
Step-by-step explanation:
Answer:
This is a hard question I’m not sure
Step-by-step explanation:
The first term of the geometric sequence is 0.0061
<u>Step-by-step explanation:</u>
The general form of geometric sequence is a, ar, ar²,ar³,.......
where,
- a is the first term of the sequence.
- r is the common ratio. Here, the common ratio r = 4.
- The 8th term of the sequence is 100. Hence n = 8.
<u>The formula to find the nth term of the geometric sequence is given by :</u>
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
⇒ a = 0.0061
Therefore, the first term of the geometric sequence is 0.0061
Answer:
Around 11.9
Step-by-step explanation:
5.3n + 7.75 = 70.85
First subtract 7.75 on both sides.
5.3n = 63.1
Then divide both sides by 5.3
n=11.9 (I rounded to the nearest tenth.)