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Solve the simultaneous equations 3x=2y and 2xy=12

Answer:x=-2, y=-3 or x=2, y=3
Explanation:We can rewrite 2xy=12 as (2y)x=12, and since we know that 2y=3x, we can substitute this in to get the following equation: 3x^2 = 12. Solving this we get that...

Answered by Scarlett S. • Maths tutor

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Differentiate the following: y = 3x^(1/3) + 2

Answer: dy/dx = x^-2/3Explanation: When differentiating, we bring the power to the front and subtract 1 from the power to get the new power. So the first term becomes (3 x 1/3)x^{(1/3 - 1)}

Answered by Scarlett S. • Maths tutor

2718 Views

How do I predict the shape of a molecule?

Step 1: Using the periodic table, find how many electrons are in the outer shell of the central atom. Step 2: Add one electron for every other atom that the central atom is bound to. Step 3: Look at the n...

Answered by Joe G. • Chemistry tutor

2000 Views

Solve the equation x^2 + 3x - 10 = 0

Identify a, b and c based in the GENERAL FORM OF A QUADRATIC EQUATION: ax² + bx + c (= 0)ax² + bx + c = 0 x² + 3x - 10 =...

Answered by Emmanuel A. • Maths tutor

2913 Views

Discuss the application of the inverted U hypothesis and drive theory to achieve optimum performance

Drive theory shows that there is a linear relationship between arousal and sporting performance. (AO1) As arousal increases dominant habit occurs – elite performer error free / novice performer error str...

Answered by George M. • Physical Education tutor

4246 Views