Answer:
60 chickens
Step-by-step explanation:
We assume the 140 refers to the number animals (heads, noses, bodies, whatever). If all of those were chickens, there would be 280 legs. There are 160 legs more than that.
Since each pig that replaces a chicken adds 2 legs, there must be 160/2 = 80 pigs. That leaves 140 -80 = 60 chickens.
Answer:
Step-by-step explanation:
<u>The weight of the suitcase is the difference of the two measures:</u>
- 223.7 - 182.5 = 41.2 pounds
Since its less than 50 pounds no extra fees will be charges.
Answer:
(2, 4)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
3x + y = 10
y = x + 2
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
- Substitute in <em>y</em>: 3x + (x + 2) = 10
- Combine like terms: 4x + 2 = 10
- Isolate <em>x</em> term: 4x = 8
- Isolate <em>x</em>: x = 2
<u>Step 3: Solve for </u><em><u>y</u></em>
- Define equation: y = x + 2
- Substitute in <em>y</em>: y = 2 + 2
- Add: y = 4
Answer:
The number of pages in a book.
Step-by-step explanation:
The number of pages in a book is not an example of a "real-life" collection.
Real-life collection includes all of the following;
- Cards you hold in a card game.
- Players on a soccer team.
- Favorite songs stored in your computer.