Top answers

How do I add fractions?

When adding fractions, the denominators (the numbers at the bottom of the fractions) m ust be the same. If they are already the same, then you simply add the numerators (the numbers at the top of the fractio...
KH
Answered by Katie H. • Maths tutor
5427 Views

What does a negative velocity mean?

To understand this question, it is important to know that velocity has both a direction and a magnitude. The magnitude can be expressed by the unit m/s, however the direction is expressed by a vector. To dis...
TD
Answered by Thomas D. • Physics tutor
34909 Views

Why does a salt not conduct electricity in its solid state?

In order to conduct electricity, charged particles must be available and these charged particles must have the possibily to move around freely. Salts consist of ions: charged particles. In the solid state ho...
TD
Answered by Thomas D. • Chemistry tutor
35808 Views

Can you make 'p' the subject of the following equation? 4(p-2q)= 3p+2

When a question asks you to make something the subject of an equation, it is asking you to rearrange it to get it in the form of, for example when 'p' is the subject, 'p = ....' First we want to expand the b...
SM
Answered by Sarah M. • Maths tutor
20552 Views

Find the coordinates of the minimum point of the curve y = 3x^(2) + 9x + 10

(Note: in this answer I will use the notation y' to represent the differential of y, and by the same reasoning y'' denotes the differential of y', or the second derivative of y.) A curve's maximum or minimum...
JF
Answered by James F. • Maths tutor
27958 Views