A ship is 12 km due north of Gauss Island when it sends a distress signal to the coast guard. If the coast guard rescue boat is 18 km due east of Gauss Island when it received the call, how far away from the ship is the rescue boat, to the nearest tenth of a kilometre? It helps to draw a picture. Enter number only.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.