Which is the correct input-output table for the function f(x) = 7 – 4.5x
1 answer:
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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
Answer:
Step-by-step explanation:
Given:
radius of cone = 3 inch
Total area of cone =
Find the volume of the cone?
We know the area of cone = -------(1)
Where r = radius
Ans s = side of the cone
Put the area value in equation 1
-------(1)
Put r value in above equation.
The side s = 5 inches
We know the side of the cone formula
Put r and s value in above equation.
The volume of cone is
Put r and h value in above equation.
The Volume of the cone is