Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality
<u>Pre-Calculus</u>
Law of Sines: 
- A, B, C are angle measures
- a, b, c are leg lengths
Step-by-step explanation:
<u>Step 1: Identify</u>
A = 27°, a = 11
B = x°, b = 15
<u>Step 2: Solve for </u><em><u>x</u></em>
- Substitute [LOS]:

- Cross-multiply:

- Isolate <em>x</em> term:

- Isolate <em>x</em>:

- Evaluate:

- Round:

5x + 9x + 26 = 180
14x = 180 - 26
14x = 154
x = 154 / 14
x = 11
answer
B. 11
Answer:
60
Step-by-step explanation:
m∠1=(55+65)/2=60
Answer: 
Step-by-step explanation:
Given
The position of a particle is 
Velocity is given by the derivative of position with respect to time

So, velocity is constant at any point in time.
At t=8, it is 
Answer:
12
Step-by-step explanation:
Pythagorean theorem:
a^2 + b ^2 = c ^2
side^2 + side^2 = hypotenuse^2
5^2 + x^2 = 13^2
25 + x ^2 = 169
subtract 25
x^2 = 144
√ each side
x= √144 = 12