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Solve the simultaneous equations 3x + 4y = 17 and 4x + y = 14
Eq1: 3x + 4y = 17
Eq2: 4x + y = 14
Eq2 x 4: 16x + 4y = 56
Subtract Eq1 from this to isolate x: 16x + 4y - 3x - 4y = 56 - 17
Simplify: 13x = 39
Why is the heart known as a double pump?
The heart is known as a double pump becasue each half pumps blood around a different circulation system. The right side pumps blood to the lungs, while the left side pumps blood around the body.
