Top answers

State the conditions by which a Poisson distribution model may be suitable for a given random variable X.

The events recorded by X occur randomly, independently, singly in space and time and at a constant average rate (an average (mean) rate proportional to the length of the interval).
KC
2617 Views

Predict the products of electrolysis of molten calcium chloride and explain which ions are at each electrode

Electrolysis is a process in which electrical energy, from a direct current (dc) supply, breaks down electrolytes. the free moving ions in electrolytes are attracted to the oppositely charged electrodes whic...
YM
Answered by Yasmeen M. • Chemistry tutor
18606 Views

Image a graph. In which instances is it more appropriate to use an adjacency list instead of an adjacency matrix?

There are two criteria that usually determine whether we use an adjacency list or an adjacency matrix?a. The size of the graph and the number of edges. If the graph has a very big number of nodes but has onl...
CB
Answered by Calin B. • Computing tutor
1989 Views

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

3+4+5=12 72/12=6 3 6= 18 4 6=24 5 6=30 Area of a right-angled triangle= a b/2 18 24 0.5= 216
SK
Answered by Saif K. • Maths tutor
3237 Views

Explain how blood vessels reduce the amount of heat lost from the body. (3)

blood vessels narrow (vasoconstriction) reduces blood flow blood vessels are close to the surface of the skin less heat lost by radiation
SS
Answered by Soham S. • Biology tutor
2875 Views