Search our library of homework questions

Top answers

All subjects

All levels

How Can You Prevent Viruses?

Viruses can be prevented by taking sensible precautions, including:

Keeping your operating system up to date.Using up to date anti-virus software.Not opening an email attachment unless you are expe...

Answered by Najeeb H. • ICT tutor

1487 Views

How do fish ventilate their gills?

Unlike mammals fish have water as their gas exchange medium instead of air. Fish use gills for gas exchange, gills are specialised flaps of tissue which have the following features to allow efficient gas ...

Answered by Meg H. • Biology tutor

8574 Views

Line Q goes through (0,5) and (4,7). Find the equation of Line Q in the form y = mx + c

M = Gradient M = (y₂- y1)/(x2 - x₁) C = the 'y' intercept, where x = 0 Therefore, M = 2/4 = 1/2 = 0.5 y = 0.5x + 5

Answered by Tutor105540 D. • Maths tutor

4799 Views

PQRS is a parallelogram with P->Q=a and P->S=b. Find S->Q in terms of a and b. N is a point between S and Q, where SN:NQ is 3:2, find N->R

Vectors are special in that they have a direction as well as magnitude (size).

To get from S->Q you can go from S->P = -b and then P->Q =a so S->Q = -b + a = a

Answered by Kristian B. • Maths tutor

5555 Views

What are the main differences between mitosis and meiosis?

Mitosis Human cells have 23 pairs of chromosomes (diploid - 2 copies of each chromosomes). This is a form of cell devision which makes an exact replica of the cell that is dividing. The cell grows ...

Answered by Jun Yu C. • Biology tutor

4740 Views