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The equation of a circle is x^2-6x+y^2+4y=12. Complete the square to find the centre and radius of the circle.

When we complete the square, we're looking for an equation that looks like (x-a)² + (y-b)² = r², where (a,b) is the centre and r is the radius. When we expand brackets usi...

Answered by Hubert A. • Maths tutor

5291 Views

Alcohol A has the chemical formula CH3CH(OH)CH2CH(CH3)CH3 . Give the IUPAC name for alcohol A.

Firstly I would get the student to draw out the structure of the alcohol and check whether they were able to place the alcohol groups and side chains in the right place on the chain. Then I take would the...

Answered by Emma B. • Chemistry tutor

18871 Views

differentiate- X^3- 2X^2+3

3-1=2 2X2 = 4 2-1= 1 =3x^2- 4x

Answered by Radhika T. • Maths tutor

4627 Views

Explain the concept of 'chemiosmosis' in oxidative phosphorylation

The process of chemiosmosis essentially addresses the issue of storing chemical energy into a specific bond. The conversion from chemical energy in the coenzymes, such as NADH and FADH

Answered by Narut P. • Biology tutor

5344 Views

Prove by induction that the sum of the first n integers can be written as (1/2)(n)(n+1).

For n = 1, the sum is given by (1/2)(1)(1+1), which gives 1, the expected result. We now assume that the statement is true for some k. If we look at k+1, the sum is given by 1 + 2 + ... + k + (k+1). Since...

Answered by Jason S. • Further Mathematics tutor

2847 Views