Answer: divide it by the number of numbers you added up.
Step-by-step explanation:
For example, let's say you had to find the average of 1, 2, and 3. You add all the numbers up to get 6. Since you had to add 3 numbers together (1, 2, 3) to get 6, you divide 6 by 3 to get the mean/average, which in this case, is 2
Answer: (-2, -2)
Step-by-step explanation:
When you approach these types of questions, first look for a pattern. Both the x and y value are divided by 2.5 in the image, so do the same with point t. The image would be -5/2.5, -5,2.5 or -2, -2
Answer:
im down
Step-by-step explanation:
Answer:
me either man.., me either
Step-by-step explanation:
![8 {sin}^{2} x + cos \: x - 5 = 0](https://tex.z-dn.net/?f=8%20%7Bsin%7D%5E%7B2%7D%20x%20%2B%20cos%20%5C%3A%20x%20-%205%20%3D%200)
![recall \: that \: {sin}^{2} x + {cos}^{2} x = 1](https://tex.z-dn.net/?f=recall%20%5C%3A%20that%20%5C%3A%20%20%7Bsin%7D%5E%7B2%7D%20x%20%2B%20%20%7Bcos%7D%5E%7B2%7D%20x%20%3D%201)
![then \: {sin}^{2} x = 1 - {cos}^{2} x](https://tex.z-dn.net/?f=then%20%5C%3A%20%20%7Bsin%7D%5E%7B2%7D%20x%20%3D%201%20-%20%20%7Bcos%7D%5E%7B2%7D%20x)
then substitute,
![8( 1 - {cos}^{2} x) + cos \: x - 5 = 0](https://tex.z-dn.net/?f=8%28%201%20-%20%7Bcos%7D%5E%7B2%7D%20x%29%20%20%2B%20cos%20%5C%3A%20x%20-%205%20%3D%200)
After Further Simplication,
![8 {cos}^{2} x - cos \: x - 3 = 0](https://tex.z-dn.net/?f=8%20%7Bcos%7D%5E%7B2%7D%20x%20-%20cos%20%5C%3A%20x%20-%203%20%3D%200)
![let \: y = \cos(x)](https://tex.z-dn.net/?f=let%20%5C%3A%20y%20%3D%20%20%5Ccos%28x%29%20)
![8 {y}^{2} - y - 3 = 0](https://tex.z-dn.net/?f=8%20%7By%7D%5E%7B2%7D%20%20-%20y%20-%203%20%3D%200)
use quadratic formulae
![y = 0.375 \: or \: - 0.25](https://tex.z-dn.net/?f=y%20%3D%200.375%20%5C%3A%20or%20%5C%3A%20%20-%200.25)
therefore
![\cos(x) = 0.375 \: or \: - 0.25](https://tex.z-dn.net/?f=%20%5Ccos%28x%29%20%20%3D%200.375%20%5C%3A%20or%20%5C%3A%20%20-%200.25)
![x = 70degrees \: or \: 104.5degrees](https://tex.z-dn.net/?f=%20x%20%3D%2070degrees%20%5C%3A%20or%20%5C%3A%20104.5degrees)