Top answers

All subjects
A Level

Simplify the boolean expression ¬(A.B)+A.

¬(A.B)+A -- given in question. =(¬A+¬B)+A -- using De Morgan's Law. =¬A+¬B+A -- can remove the brackets. =1+¬B -- using identity ¬A+A = 1.=1 -- using identity 1 + anything = 1.

Answered by Computing tutor
2121 Views

Explain why the use of petrol and diesel cars may be a source of market failure. [15]

define market failure i.e. when free market forces of supply and demand fail to produce the quantities of goods and services at prices which reflect marginal utilities OR fails to opera...

Answered by Economics tutor
3181 Views

Explain how a buffer solution resists the pH change when an acid or alkali is added.

HA <----> H+ + OH-Acid:Adding an acid increases the concentration of H+ ions as acids are proton donors. These H+ ions react with the conjugate base, A-, to form HA and thus shift the equilibrium po...

AF
13181 Views

Outline and briefly evaluate locus of control as an explanation of resistance to social influence.

Locus of control was a concept put forward by Rotter in 1966 that describes an element of our personality. It is the extent to which we feel in control and take responsible for the things around us that h...

IN
Answered by Isobel N. Psychology tutor
47826 Views

Discuss how cholesterol is transported in the body, and describe these transport molecules.

Cholesterol, like other lipids, is insoluble in water. Therefore, it is transported in the blood in lipoproteins. These are spheres of lipid and protein, and are made in the liver. There are two types of ...

NC
Answered by Nabeelah C. Biology tutor
4452 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning