exam Maths Puzzle Numerical Ability

why a right triangle cannot exist?

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exam Other Question

jack has $2.10 in nickles and quarter she has twice as many nickles as quater . how many of each does she have. Solve the system of equation. If the system is consistent, state the coordinates of the point of intersection. If not consistent, state whether it is inconsistent of dependent.

x-y=3
2x+3y=11