Answer: 4.2
Step-by-step explanation: 20 x 21
100
= 4.2
first off, let's convert the mixed fractions to improper, and then do the sum.
Answer:
v=kn+4f Over 9 ( ıdk How can ı show over 9)
Step-by-step explanation:
Just Multiply by 9
Answer:
(-2, 2)
Step-by-step explanation:
x= -2 y= 2
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