1. **State the problem:** We are given a recursive sequence defined by $a_1 = 5$ and $a_n = -2a_{n-1}$ for $n \geq 2$. We need to find the value of $a_6$.
2. **Understand the formula:** The sequence is defined recursively, meaning each term depends on the previous term multiplied by $-2$.
3. **Calculate terms step-by-step:**
- $a_1 = 5$
- $a_2 = -2 \times a_1 = -2 \times 5 = -10$
- $a_3 = -2 \times a_2 = -2 \times (-10) = 20$
- $a_4 = -2 \times a_3 = -2 \times 20 = -40$
- $a_5 = -2 \times a_4 = -2 \times (-40) = 80$
- $a_6 = -2 \times a_5 = -2 \times 80 = -160$
4. **Final answer:**
$$a_6 = -160$$
This means the sixth term of the sequence is $-160$.
Recursive Sequence Fcd69B
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.