Top answers

If x^2 = 16, why isn't the answer just x = 4?

You're right that x = 4 is a solution to the equation - but the problem is it's not the only solution, x = -4 also works.You have to be careful not to take a shortcut by simply taking the square root of both...
LD
Answered by Laurie D. • Maths tutor
18551 Views

Frequent treatment with antibiotics can result in resistant strains of bacteria, explain how.

A mutation can occur, causing the formation of an antibiotic resistant gene within a bacteria. This bacteria will then survive the course of antibiotics and reproduce, passing on the gene by vertical gene tr...
HA
Answered by Hannah A. • Biology tutor
8772 Views

Explain how smooth muscle in the arterioles can reduce blood flow.

The smooth muscle contracts, causing vasoconstriction. Vasoconstriction is the narrowing of the vessel lumen.
HA
Answered by Hannah A. • Biology tutor
10957 Views

Give 3 differences between aerobic and anaerobic respiration.

Oxygen is used in aerobic respiration. More energy is generated in aerobic respiration. Carbon dioxide and water are products of aerobic respiration, whereas lactic acid is the end product of anaerobic respi...
HA
Answered by Hannah A. • Biology tutor
30555 Views

Is Virgil's Aeneid a pro or anti Augustan epic?

Virgil’s Aeneid is an epic that can be read both from a positive and a negative stance regarding the reign of Augustus, as references to the Roman empire and the lineage of Augustus himself can be contrasted...
JL
21344 Views