exam Maths Puzzle Numerical Ability

Could you please help me with a question?

Solve the system:
2x + 3y = 12
x + 1.5y = -1

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exam Other Question

The saddle height on a bicycle should be 109% of the riders inside leg measurement L. Write an equation expressing the fact that the saddle height for Brenda is 36 in. Translate the following into a quadratic equation, and solve it: The length of a rectangular garden is three times its width; if the area of the garden is 75 square meters, what are its dimensions?