Top answers

A circle with centre C has equation x^2 + y^2 +8x -12y = 12

Recognise that the form this question is a circleRemember alternate circle equation (x + a) 2 + (x + b) 2 = r 2 Where centre of circle (-a,-b) and r is the radiusTo get the right form use complete the square...
MG
Answered by Monique G. • Maths tutor
4048 Views

Please describe an Ionic Bond

The mutual electrostatic attraction between pairs of oppositely charged ions. Usually the metal atom loses electrons to become a positively charged cation where as the non metal atom gains electrons to becom...
OM
Answered by Orlando M. • Chemistry tutor
2657 Views

How do I structure an effective essay?

A well structured essay opens with the author's intention; in the first paragraph, you outline what the following essay is about. For example, when comparing two poems, the opening paragraph will mention bot...
Answered by • English Literature tutor
3698 Views

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

3+4+5=12,72/12=6,3x6=18, 4x6=24,Area=1/2 x 18 x 24=216
KZ
Answered by Kamil Z. • Maths tutor
2993 Views

How do I use the 把 (bǎ) sentence structure?

The 把 (bǎ) sentence structure is useful for constructing sentences where the focus is on the result of an actionIt's very common in Mandarin but can feel a bit strange for english speakers as the verb is rig...
Answered by • Mandarin tutor
1754 Views