Answer:
Step-by-step explanation:
Firstly you must understand you want to get the value of y.
So put in values into equation which make x.
To understand here lets look at y = 0
if y is to be 0 then x is 3.
If we substitute this value into equation (B) we get the result.
Now we have identified our answer, all is left is to substitute all other values of x and see if y are true.
So , we can see B is the answer
It will take both of them 2 11/12 hours to complete the room
<h3>Fractions and proportions</h3>
Fractions are written as a ratio of two integers. For instance a/b is a fraction.
Let the time it will take them to complete the job together be "x" such that;
1/x = 1/5 + 1/7
Simplify
1/x = 7+5/35
1/x = 12/35
Cross multiply
12x = 35
x = 35/12
x = 2 11/12 hours
Therefore it will take both of them 2 11/12 hours to complete the room
Learn more on fractions here: brainly.com/question/78672
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Answer:
C. -2x + 80
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Distributive Property
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
8 - 2(3x - 36) + 4x
<u>Step 2: Simplify</u>
- [Distributive Property] Distribute -2: 8 - 6x + 72 + 4x
- [Addition] Combine like terms (x): -2x + 8 + 72
- [Addition] Combine like terms (Z): -2x + 80
Answer:
Step-by-step explanation:
