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The equation of a straight line is 3x + 2y = 24. Find where the line crosses the x-axis.

Let's first think about what it means when the line crosses the x-axis. If we consider a normal x-y coordinate plane, every point on the x-axis has a y value of 0. So if we are trying to find out where the l...
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Answered by Angela D. • Maths tutor
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Write 8^2(4^2 / 2^7) in the form 2^x

We know that 8 2 = (2 3 ) 2 = 2 6 and 4 2 = (2 2 ) 2 = 2 4 So we can write the original expression as 2 6 (2 4 /2 7 ) Then using indices laws we get 2 6 (2 -3 ) = 2 3
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Answered by Charlotte C. • Maths tutor
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Probability: These 6 coins are in a box - 10p, 10p, 10p, 20p, 20p, 50p. Someone takes 2 coins at random. What is the probability that the total value of the two coins is at least 40p?

The question has a number of important points which should be highlighted before beginning. Firstly the fact that the picks are at random. Secondly that the value of the coins must be at least 40p, so a tota...
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Answered by Tom P. • Maths tutor
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What are the methods of calculating depreciation?

There are 2 ways in calculating depreciation: Straight Line method and Reducing Balance method. Straight Line method is simple to calculate ( (cost of the asset - Residual value) / Useful life ). When calcul...
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Answered by Faizan A. • Accounting tutor
2570 Views

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

Expand the (2x + 3y)^2 term to give 4x 2 + 9y 2 +12xy Expand (x - 4)(4x 2 + 9y 2 +12xy) to give (4x 3 +9xy 2 + 12x 2 y - 16x 2 -36y 2 - 48xy)
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Answered by Mohammed R. • Maths tutor
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