Which line has a y-intercept of –2?a)
1 answer:
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Using the together rate, it is found that it will take 18 hours for Erick to build the garden box himself.
<h3>What is the together rate?</h3>The together rate is given by the sum of each separate rate.
In this problem, the rates are given as follows:
- Eric's: 1/x.
- Drew's: 2/x.
- Together: 1/6.
Hence:
x = 18.
Hence, it will take 18 hours for Erick to build the garden box himself.
More can be learned about the together rate at brainly.com/question/25159431
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Answer:
Step-by-step explanation:
The sum of the ages of a Mother and her son is 78 , three years ago the mother is five times as old as the son, what is their present ages?
To solve this , let the age of the mother be x and the age of the son be y , from the first statement :
x + y = 78
Three years ago , the mother will be x- 3 and the son will be y - 3 , from the second statement:
x - 3 = 5 ( y-3)
x- 3 = 5y - 15
x - 5y = -12
The resulting equations are
x + y = 78
x - 5y = -12
This is called a simultaneous linear equation , that means it is a linear equation.
The side of a square is xcm , if the difference between the area and the perimeter is 12 , find the legth of its side.
Interpretation:
The formula for the area of a square is and the perimeter is 4l , from the question , we have
- 4x = 12
This is not a linear equation , it is simply a quadratic equation , so the situation is non linear