Answer: 3rd one
Rearrange the original equation so it fits the model of : ax^2+bx+c=0
Then use the quadratic formula to find all possible answers.
Answer: 5) r = 5, 8th term = -78,125
6) r = 5, 8th term = -312,500
7) r = 5, {1, 5, 25, 125, 625}
8) r = 5, {-4, -20, -100, -500, -2500}
<u>Step-by-step explanation:</u>
The explicit formula of a geometric sequence is:
, where;
- n is the number of the term
- a₁ is the first term
- r is the common ratio


Answer:
is ≈ 14.01
Step-by-step explanation:
If the table top is a square, to find the area, you would multiply one side times itself.
If you are given the area, and need to find the sides, you will take the square root of the area to find the side length.
Your question doesn't say to round, but 269 is not a perfect square.
is ≈ 14.01
If the area of the base was 169, that is a perfect square.
= 13
By using the rules:

We have proven the identity. Below you can follow the demonstration.
<h3>
</h3><h3>
How to prove the identity?</h3>
Here you need to remember two things:

Here we have the expression:

By using the first rule, we can rewrite:

By using the second rule, we can rewrite:

Now if we multiply and divide by cos(x), we get:

In this way, the identity was proven.
If you want to learn more about trigonometric identities:
brainly.com/question/7331447
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