What are you asking is their a problem to it?
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Terms/Coefficients
- Factoring
Step-by-step explanation:
<u>Step 1: Define</u>

<u>Step 2: Simplify</u>
- [Fraction - Numerator] Factor:

- [Fraction] Reduce:

ANSWER—46
Step-by-step explanation:
*All the angles in a triangle add up to 180 degrees.*
Let The wanted angle be x,
Then x+98+36=180. Solve for x.
Answer:
It's the law of cosines
Step-by-step explanation:
law of cosines states that 
so we know that a = 7, b = 4, and alpha would be 135 degrees, so just plugging it in gets us 49+16-2*7*4*(-0.707) = 65 + 39.59 = 104.59
(1,-4)
x=1, y=-4.
Solve for the first variable in one of the equations, then substitute the result into the other equation.