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What is the largest possible length of a pole you could fit in a room?

Lets say you are in a cubical grain silo, with a height of 12m, and a base with dimensions 3m by 4m. If you wanted to fit a pole in the silo, what is the largest possible length of the pole? The length we ar...
TW
Answered by Tom W. • Maths tutor
6690 Views

What's the inverse of the function f=x+2?

If we apply a function and then its inverse, we should get back to where we started. Suppose we start with an element x. If we apply f to it, we get to x+2. In order to get back to where we started (i.e. x),...
MG
Answered by Marco G. • Maths tutor
4912 Views

Why is anything to the power 0 equal 1?

This is often overlooked as no-one gives a reason to why this is and is often stated as a fact. We start off with the basic indice law of x y * x z = x y+z . For example, Likewise with division, you can have...
PB
Answered by Pavit B. • Maths tutor
6105 Views

Given that your grade for your computing is based on 5 coursework that weigh differently, and you know the results of 4: 80, 75, 50 and 90 which weighs 10%, 20%, 45% and 5%. What grade do you need in your last coursework to achieve at least a B (70%)?

You know the following: A) 80, 10% B) 75, 20% C) 50, 45% D) 90, 5% E) X, (100-10-20-45-5)% = 20% Therefore, create a formula with the facts given and the mean marks must be at least 70. Note that 10% is equi...
CZ
Answered by Chen Z. • Maths tutor
4881 Views

How do you solve this problem?

The problem is: ‘Tom travels from a to b and at a speed of 90km per hour. It takes him time ‘t’. Alice travels from a to b at a speed of 70km per hour. It takes her time ‘t+ 1 hour’. How long did it take for...
MG
10003 Views