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How to solve problems with discount applied twice in the same product?

Follow these steps: 1) Use the original price given, multiplying it by [(100-first discount percentage) over 100] This is done to get the discounted price when the discount is applied once. 2) Use the discou...
TT
Answered by Theofanis T. • Maths tutor
4338 Views

(5 + 2(2^0.5))(7 - 3(2^0.5))

23 - 2 0.5
NW
Answered by Naman W. • Maths tutor
3431 Views

Find the binomial expansion of ((x^2) − 5)^3

This is a typical Core 2 maths AS question. I would start by explaining how a formula can be used to expand this expression and similar ones. I would then explain how to create pascal's triangle and how it c...
JC
Answered by James C. • Maths tutor
6684 Views

How do you find the volume of a conical frustum?

First look at the volume of a cone, V = (pi R H)/3. It is clear the volume of our conical frustum will be that of a large cone minus that of a smaller one on top. Also note that the smaller cone will simply ...
SB
Answered by Sam B. • Maths tutor
4571 Views

Solve the simultaneous equations: 8x + 2y =46, and 7x + 3y = 47

Whenever we have two equations with two unknowns (x and y) to solve simultaneously, we can try to substitute one equation into the other. If we were to multiply every term in equation 1 by 1.5, then we would...
TC
Answered by Thomas C. • Maths tutor
8297 Views