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Solve algebraically the simultaneous equations, giving your answers in terms of b : 3x+by=5, x-y=-2

First, I would label the two equations 1 and 2:(1) 3x+by=5(2)x-y=-2Next, multiply (2) by 3 and subtract this equation from (1) in order to cancel out the x terms: 3x+by=5-(3x-3y=-6)This results in the equati...
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Answered by Thomas L. • Maths tutor
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A straight line goes through the point (7, 5) with a slope of 2. What is the equation of the line?

Th equation of a line is denoted as y = mx + c , with m as the slope and c as the y intercept. We already know that the slope is 2. Since the line passes through the point (7, 5) we can input these values fo...
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Answered by Caitlin C. • Maths tutor
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Differentiate 8x^3+4x^2+2

24x^2+8x
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Answered by Maximilian B. • Maths tutor
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Simplify- (8/27)^(2/3)

We know that (8/27)^(1/3). = (2/3)Then do (2/3)^2 = (4/9)Split up 2/3, into powers of 1/3, and 2.
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Answered by Theo M. • Maths tutor
6301 Views

What is the best way to structure an A Level essay in order to most effectively meet the Assessment Objectives?

At A Level, the structure of essay is absolutely essential to ensure the Assessment Objectives are fully met. Examiners will have hundreds of texts to mark, delegating a relatively small amount of time to ea...
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