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4y^2 = 256, Find a value for y

y^2 = 256/4 = 64
therefore, y = sqrt(64) = 8

Answered by Kai P. • Maths tutor

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How can I work out the area of a semi-circle with a diameter of 12cm?

Factorise x 2 − x − 12

Simplify: 2x + 6y + 2y - x

Calculate the value of both x and y using the following 2 equations: 3x - 2y = 12 (1) and x - y = 3 (2)

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