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A,B and C all lie on the line x^2 + y^2 = 49 where A is on the y axis, B is on the X axis and C is the mid point of the straight-line connecting A and B.

As we know that A and B are on the axis so sub in X=0 and Y=0 into the equation to solve for the co-ordinates A and B.For A 0 2 +y 2 =49y= square root of 49 = 7Do the same for B, which gives: A= (0,7) B= (7,...
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Answered by Oliver W. • Maths tutor
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How can i understand fractions?

Fractions can be easily understood by thinking of how to split n numbers of pizzas between d people. Through this we see that everyone gets (n/d) pizzas
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Answered by Tomos W. • Maths tutor
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Solve the simultaneous equations; 3x + 2y = 11 x -4y = 13

Rearrange to get either y or x as the subject of the equation and then solve the equation by doing this. This is called eliminating one variable (x or y) substitute the found value into either equation state...
Answered by • Maths tutor
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Simplify (3x+2)/(sqrt(x)-1)

-((3x+2)(1+sqrt(x)))/(1-x)
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Answered by Zyra A. • Maths tutor
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Let y = (4x^2 + 3)^4. Find dy/dx.

32x(4x^2 + 3)^3
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