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The circle (x-3)^2 +(x-2)^2 = 20 has centre C. Write down the radius of the circle and the coordinates of C.

Radius = square root of 20
Centre = (3,2)

Answered by Jessica N. • Maths tutor

5134 Views

What is the exact answer to (1^3 + 2^3 + 3^3)^(0.5) ?

+6 or -6

Answered by Jessica N. • Maths tutor

4315 Views

Liquid ammonia (NH3) and water (H2O) both show hydrogen bonding, describe what a hydrogen bond is and what it is conferred by

A hydrogen bond forms between the positive dipole of one molecule and the negative dipole of another molecule. They can be represented on a diagram with a dashed line perpendicular (at 90˚) to the bond an...

Answered by Ben H. • Chemistry tutor

25775 Views

When should I use the accusative case?

The accusative is used for the direct object of a sentence. The direct object is the word (normally a noun) that receives the action of the verb. Example:Der Hund frisst den Toast - The dog eats the toast...

Answered by Tom B. • German tutor

2349 Views

What are the basic differences between Chinese and English grammar?

One of the differences between Chinese and English grammar is that in Chinese, we do not use 'tenses' in the same way as in English. In other word, there is no such things as 'ed,' 'has' 'had,' 'shall be,...

Answered by Jessie Y. • Mandarin tutor

5602 Views