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Nostrana [21]
2 years ago
14

Solve by substitution 8x+y=-16 -3x+ y= -5

Mathematics
1 answer:
azamat2 years ago
3 0

Answer:

y=–8, x=–1

Step-by-step explanation:

I don't have time to explain

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Brainliest and points !! ANSWER ASAP !!
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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:

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The resulting equations are

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This is called a simultaneous linear equation , that means it is a linear equation.

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Interpretation:

The formula for the area of a square is l^{2} and the perimeter is 4l , from the question , we have

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

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