Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Midpoint Formula:

Step-by-step explanation:
<u>Step 1: Define</u>
A (-3, -5)
B (2, 7)
<u>Step 2: Find midpoint</u>
- Substitute:

- Add:

- Divide:

Hope that helped I use this when I'm doing math. It's called cymath it explain how they got the answer.
Step-by-step explanation:
option b ie. 98 degree
if you do angle 2 +10x+8=180
from 10x +8 and 12x -10 we can get the value of X
The ricipricals are 3/8 and 2/13