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Factorise this equation: x^2+3x-10=0

The first stage is to calculate two numbers that multiply together to make the integer in the equation, in this example it's -10. The numbers are 5 and 2. Now these two number should both satisfy the sign...

CO
Answered by Curtis O. Maths tutor
3476 Views

How can one remember the function and the anatomy of the cardiac valves?

There are 4 cardiac (from the Greek 'καρδία', meaning 'heart') valves.

Physiology (Function) - The pulmonary and aortic valves prevent the backflow of blood from the pulmonary artery and aorta into...

AH
Answered by Ariadne H. Biology tutor
7718 Views

What is the difference between breathing and respiration?

It is understandable why there is confusion between the two terms as we use the term 'respiratory system' to refer to the lungs and associated structures, even though they are not directly involved in the...

AH
Answered by Ariadne H. Biology tutor
2721 Views

A ladder 6.2m long is leaning against a wall. The bottom of the ladder is 0.8m from the wall. Calculate the distance the ladder reaches up the wall, giving your answer to two decimal points.

Using the information given, we can draw a diagram of the ladder leaning against the wall. As the wall is at 90 degrees to the ground, we can see that the ladder, wall and ground form a right-angled trian...

PF
Answered by Pippa F. Maths tutor
10414 Views

How does temperature affect enzyme activity?

A low temperatures enzyme activity will be slow but as the temperature rises the enzyme will gain more kinetic energy and hence move around more enabling greater interaction with the substrate. This will ...

AW
Answered by Amelia W. Biology tutor
13628 Views

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