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omeli [17]
3 years ago
15

If you give 15% that 72 dollars. How do you had

Mathematics
2 answers:
tino4ka555 [31]3 years ago
7 0
I don't quite understand the question but I added .15 and 72 and got 10.8 so yeah
sweet [91]3 years ago
3 0
I'm not sure what you rquestion is exactly but i got 10.8 as the amount that you give

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jek_recluse [69]

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3 years ago
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Igoryamba

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 l^{2} and the perimeter is 4l , from the question , we have

x^{2} - 4x = 12

This is not a linear equation , it is simply a quadratic equation , so the situation is non linear

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3 years ago
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