Top answers

Discriminants and determining the number of real roots of a quadratic equation

What is a discriminant? A discriminant is a value calculated from a quadratic equation. It use it to ' discriminate' between the roots (or solutions) of a quadratic equation. A quadratic equation is one of t...
GN
Answered by Gus N. • Maths tutor
415284 Views

What factors affect the speed at which an action potential travels?

There are several factors affecting the rate and speed of an action potential: 1. Myelin sheath - This covers some of the nodes and acts as an electrical insulator where the action potential travels from one...
Z(
97260 Views

What is the difference between 'por' and 'para'?

Although both these words can mean 'for' in English, the variations of translations mean 'por' and 'para' have very distinct uses. Although confusing at first, it is very easy to learn when to use each corre...
KP
Answered by Kate P. • Spanish tutor
4955 Views

Why do past participles that take 'avoir' sometimes agree with the noun?

The answer is the preceding direct object. Take the sentence the boy ate the apple . Here we have a subject (the boy), followed by the verb (ate) and then the object (the apple). So the sentence would be as ...
JH
Answered by Jessica H. • French tutor
4829 Views

When can I use venire as an auxiliary verb to form a passive tense?

Venire can be used as an auxiliary verb to form a passive tense when it is conjugated in a simple tense (i.e. present, imperfect etc.).
DA
Answered by Daniel A. • Italian tutor
6150 Views