You can use mental math for this equation because it is fairly easy.
You would use mental math by looking at the equation and thinking, “What is 1/75 times 1/2?” Since you want to find out what w is. Since this is mental math, you would know the answer directly, it is 1/150.
Meaning w = 1/150
Givens
Male = 138,053,563
Female = 143,368,343
Total
The total equals 281 421 906
Percents
Male = (138,053,563 / 281 421 906) * 100 = 49.1%
Female = ( 143,368,343/ 281 421 906) * 100 = 50.94%
Rounded
Male = 49
Female = 51
Comment.
To find this %s you could just use the first 3 digits of everything.
Total = 138 + 143 = 281
% male = (138/281) = 49.1
% female = (143/281) * 100 = 50.88
These give you the same answers when rounding.
Answer:
x = -6
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
- Subtraction Property of Equality<u>
</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
6 = -2x - 6
<u>Step 2: Solve for </u><em><u>x</u></em>
- [Addition Property of Equality] Add 6 on both sides: 12 = -2x
- [Division Property of Equality] Divide -2 on both sides: -6 = x
- Rewrite: x = -6
