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A ladder 6.8m long is leaning against a wall. The foot of the ladder is 1.5m from the wall. Calculate the distance the ladder reaches up the wall.

For answering this question we need to understand Pythagoras theorem. It states that when a triangle has a right angle (90º) the square of the hypotenuse is equal to the sum of the squares of the two other s...
CV
Answered by Clara V. • Maths tutor
16209 Views

Factorise: 6x^2-3x-3=0

Since the equation shows a 6x^2, we know that in the brackets we must have either: (2x+a)(3x+b) or (6x+a)(x+b) However we know the last two numbers must multiply to make -3, hence a and b must be +1 and -3 r...
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Answered by William P. • Maths tutor
4742 Views

why does 4 / 0.5 =8?

would start by asking what is 4 * 0.5 ? They might then work out that that is 2 which would lead them to have a cognitive conflict which can be very useful as they can understand that the logic is wrong. I w...
KR
Answered by Kathleen R. • Maths tutor
11643 Views

What is diffusion?

All the cells in our body communicate constantly with their surrounding environment in order to feed and excrete their wastes. Various substances in that environment pass through the cell membrane to enter o...
KC
Answered by Kleio C. • Biology tutor
4682 Views

What are some tips for succeeding in the listening part of the exam?

As with any language, practising is the most important part. However, quickly scanning the questions and then write down or make a note of the key words that you have to pay attention to. For example, if one...
AC
Answered by Alice C. • Mandarin tutor
2102 Views