Answer:
4*n^2 - 4
Step-by-step explanation:
(2n+2)(2n-2) = 4*(n^2) - 4n + 4n - 4 = 4*(n^2) - 4
Answer:
7
Step-by-step explanation:
First, you should replace the variables with the numbers. So,
2(6)-[6-(4+2)/6]
Don't worry, it'll look less confusing later! Next, solve the parentheses that are in the very middle.
2(6)-[6-6/6]
2(6)-[6-1]
12-5
7
I really hope this helps you!!! Have an amazing day c:
Answer:
240 feet
Step-by-step explanation:
Answer:
x = 7
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Geometry</u>
- All angles in a triangle add up to 180°
Step-by-step explanation:
<u>Step 1: Set up Equation</u>
<em>Every angle must add up to 180°.</em>
(6x - 6)° + 54° + 90° = 180°
<u>Step 2: Solve for </u><em><u>x</u></em>
- Combine like terms: 6x + 138 = 180
- Isolate <em>x</em> term: 6x = 42
- Isolate <em>x</em>: x = 7
Answer:
=452.16 ft^3
Step-by-step explanation:
Volume of cylinder formula: V=πr^2(h)
Note: Diamater/2=radius
Plug-in: V=3.14(4)^2(9)
=452.16 ft^3