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Multiply and simplify the following: (x-8)^2

With these questions, I always think how to write out the expression in terms that are more simple to understand: I would write out the expression as '(x-8)(x-8)' which really shows what the power of 2 is re...
MS
Answered by Myles S. • Maths tutor
12760 Views

Give reasons why tropical storms eventually lose their energy

They pass over land, which in turn slows their movement due to frictionLoss of energy because of the cooling effect of passing over water at higher latitudes
AA
Answered by Annabel A. • Geography tutor
7081 Views

What are strong and weak acids? How do they differ from diluted and concentrated acids?

Acid strength relates to the degree of ionisation in aqueous solution. A strong acid is completely ionised in aqueous solution. A weak acid is only partially ionised in aqueous solution.On the other hand, ac...
CZ
Answered by Coco Z. • Chemistry tutor
9445 Views

Solve 3y^2 – 60y + 220 = 0 using the quadratic formula:

when a quadratic equation isn't able to be solved using factorisation, the quadratic formula can be used, which has the general formula of ** **. The letters in the formula represent the coefficients in the ...
OC
Answered by Olivia C. • Maths tutor
3851 Views

If a ball is thrown at a velocity of 5m/s, what height does it reach?

For this, we use the conservation of energy. We know that loss of kinetic energy = gain in potential energy, so KE = PE. Our equation is 0.5 m v 2 = m g h, but as we have m on both sides, this cancels. So, w...
LU
Answered by Laura U. • Physics tutor
7115 Views