# Mathematics

## GCSE MATHS: FACTORISATION?

Factorise fully: 1) 3xy+2+6x+y 2) x(y-3) + 2(3-y) 3) 3x²-27 Thanks! :)
6 Answer(s) · 15 years ago

## Find the 1st derivative?

y = √2x^2 - 8x +4 Could some kind person tell me how to find the 1st derivative of that? I will be very grateful :]
2 Answer(s) · 15 years ago

## can you show me how to do this? -5(2x-7)+24=89?

can you show me how to do this? -5(2x-7)+24=89?
3 Answer(s) · 15 years ago

## 3 math questions, Algebra II?

1) When given two points, how can you write the equation of a line in standard form? 2) How would you simplify an equation like: (sqrt(18) + sqrt(8))/(sqrt(6))? 3) Lastly, how would simplify (-2a^(2)x^(3)y^(5))^4
9 Answer(s) · 16 years ago

## advice for survey for ap statistics?

i need to do a survey for my ap stat class and it needs to be an original and interesting idea. any suggestions?
2 Answer(s) · 16 years ago

## Math Problem:If a square garden covers an area of 81 ft2, how many feet of fencing does she need?

Math Problem:If a square garden covers an area of 81 ft2, how many feet of fencing does she need?
6 Answer(s) · 15 years ago

I'm kinda stuck on these three problems.... The expression cos 40° cos 10° + sin 40° sin 10° is equivalent to 1. cos 30° 2. cos 50° 3. sin 30° 4. sin 50° The expression sin A cos A + sin 2A is equivalent to 1. sin A (cos A + sin A) 2. cos A + 2 sin A 3. 3 sin A cos A 4. cos A + 2 sin 2A The expression sin (180° - x) is equivalent to 1. sin x 2. cos x 3. -sin x 4. -cos x
3 Answer(s) · 14 years ago

## integers how to add and subtract ?

hii can you help me please -36 - 18 ? -7(-10 + 3) ? -3(20) --------- < that is a fraction 12 show me the solution too thank you so much !
4 Answer(s) · 15 years ago

## What is the 100th decimal digit in the decimal equivalent of 12/37?

Asked By: Dancing in the Rain
Homework help!!!
3 Answer(s) · 14 years ago