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Tom starts with 50 balls. Amy starts with 28 balls. If Tom gives 22 balls to Amy, what percentage of balls does Tom have compared with Amy?

This question requires 2 logical steps. The first is to calculate how many balls Tom and Amy have after the transaction. The second is to use a formula to calculate the percentage of balls left . Reading ...

Answered by Dominic D. • Maths tutor

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Expand and simplify (x − 4)(2x + 3y)^2

Answer: 4x³ + 12x²y + 9xy² - 16x² - 48xy - 36y²

Answered by Daisy H. • Maths tutor

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Solve y = 2x^2 - 5x - 1 for x = -1 and x = 2

y = 2 (-1)² -5(-1) -1y = 2 + 10 - 1y = 11y = 2 (2)² -5(2) -1y = 8 - 10 -1y = -3

Answered by Anna B. • Maths tutor

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Show that the lines y-5x=2 and 6y-30x=36 are parallel

Rearrange both equations so that both are in the form y= something. Move the x terms to the right of both equations. y=5x+2 6y=30x+36 Factorise second equation so that common factor of 6 is shown...

Answered by Madeleine B. • Maths tutor

3030 Views