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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
16034 Views

what is the shape and bond angle of NH3 and use VSEPR theory to explain the bond angle.

NH3 has a bond angle of 107 degrees and is pyramidal this is because it has 3 bonded pairs and 1 lone pair. the lone pair repels more than the bonded pairs and this results in the bond angle being 107 degrees.
MC
Answered by Meherun C. • Chemistry tutor
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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
4560 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
11408 Views

‘Conservatives favour pragmatism over principle.’ Discuss

(Conclusion example) Overall, it can be argued that Conservatives mostly do not favour pragmatism over principle. Traditional and One Nation Conservatives could be seen as pragmatic due to beliefs in human n...
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Answered by Caitlin C. • Politics tutor
10676 Views