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What is the Pythagoras Theorem?

The Pythagoras Theorem equation is: a 2 + b 2 = c 2 It is used to calculate an unknown side of a right angled triangle. a, b and c represent sides of the triangle and you can rearange the formula to find whi...
NB
Answered by Natasha B. Maths tutor
5384 Views

How do I simplify the equation 4x + 5x -2 - 2x + 7?

To simplify an equation the x terms can be collected together to give: 4x + 5x - 2x = 7x The numbers can be collected together to give: -2 + 7 = 5 Which then when put together makes 7x + 5
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Answered by Natasha B. Maths tutor
6914 Views

How do I know whether to use por or para?

Because these words are both translated to English with 'for' it can be difficult to choose between them at times. In order to choose correctly, there are several rules to remember, here are the most importa...
TH
Answered by Tim H. Spanish tutor
6050 Views

What type of movement occurs at a) the hip and b) the knee during the downward phase of a squat?

First, think about the plane of movement that the action is occuring in. During a squat, the body looks the same when you cut it vertically down the middle. The movement is therefore occuring in the sagittal...
JW
18688 Views

Name two structural differences between arteries and veins.

Arteries have thick, elastic, muscular walls whereas veins have thin walls with few elastic fibres. Arteries need these properties to give them the strength and elasticity needed to cope with the high pressu...
JW
Answered by Jennifer W. Biology tutor
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