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For a large-scale water management project, describe one cost and one benefit.

The Three Gorges Dam was built in China as a large-scale water management project. A benefit of the Three Gorges Dam is that it provides hydroelectricity to the surrounding area. A cost of the Three Gorge...

Answered by A B. • Geography tutor

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What does the strength of lattice enthalpy of formation depend on?

So, lattice enthalpy of formation is defined as the 'standard enthalpy change when one mole of an ionic crystal lattice is formed from its constituent ions in gase...

Answered by Zaynab A. • Chemistry tutor

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Write 16× 8^2x as a power of 2 in terms of x.

16 = 2⁴8^2x = (2³)^2x = 2^6xTherefore, 16x8^2x = 2⁴x 2^6x = 2^4+6x

Answered by Xixi Y. • Maths tutor

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A curve has equation y = 20x −x^2 −2x^3 . The curve has a stationary point at the point M where x = −2. Find the x-coordinate of the other stationary point of the curve.

dy/dx = 20 - 2x - 6x² = -6x² - 2x + 20 which factorises to dy/dx = (10 - 6x)(2 + x). This shows that x=-2 and x=10/6=5/3 are stationary points of y = 20x −x² −2x³

Answered by Xixi Y. • Maths tutor

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How does an increase in interest rates affect real GDP?

An increase in interest rates increases the incentive to save, as the reward for saving is now higher. So, saving in the economy is likely to increase, which will decrease consumption (assuming that peopl...

Answered by Laura N. • Economics tutor

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