September 9th, 2014, 09:05 AM  #1 
Newbie Joined: Sep 2014 From: UK Posts: 7 Thanks: 0  Help with my homework
Hi im having a lot of trouble with these questions. Can someone help me? ^ = power v = root / = divide 1) Simplify w^1/2 x w^3/2 / w 2) Find the gradient of a straight line which is parallel to the line 2x 6y = 5 3) Simplify (2  v3)(2+v3) 4)Rationalise the denominator of 1/2v3. Give your answer in the form va/b where a and b are integers. 5)Solve 9/10x + 9/10+x = 5 6) V is directly propotional to the cube of x. When x=3, V=54. Find a formula for V in terms of x. 
September 9th, 2014, 09:14 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,146 Thanks: 1003 
These are quite basic...have you been skipping math classes?

September 9th, 2014, 09:18 AM  #3 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 520 Math Focus: Calculus/ODEs 
You will usually get help more promptly if you post no more than 2 questions per thread. Let's begin with the first one: $\displaystyle \frac{w^{\frac{1}{2}}\cdot w^{\frac{3}{2}}}{w}=w^{\frac{1}{2}}\cdot w^{\frac{3}{2}}\cdot w^{1}$ Now, add the exponents...what do you get? 
September 9th, 2014, 09:25 AM  #4  
Newbie Joined: Sep 2014 From: UK Posts: 7 Thanks: 0  I'm 16. I from England, im starting a level's and this is my summer work. I need this by tomorrow because they might kick me out of the course if I wont do it... So its kinda important but i can't do these myself. If they are easy for then please help me... Quote:
Last edited by ONEnONLY; September 9th, 2014 at 09:33 AM.  
September 9th, 2014, 09:32 AM  #5  
Newbie Joined: Sep 2014 From: UK Posts: 7 Thanks: 0  Quote:
 
September 9th, 2014, 09:39 AM  #6 
Senior Member Joined: Apr 2014 From: Europa Posts: 575 Thanks: 176  
September 9th, 2014, 09:45 AM  #7 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,146 Thanks: 1003 
It is almost impossible to "teach" from here... You are almost asking the same as teaching you how to ride a bicycle in one day, when you don't know what handlebars and pedals are... 
September 9th, 2014, 09:50 AM  #8 
Newbie Joined: Sep 2014 From: UK Posts: 7 Thanks: 0  The thing is, teaching what handlebars and pedals are is really easy, and also learning it is really easy too. I really just want the answers, i will learn in lessons. I need this just so i can give it back to the teacher and he can tick the 'done' box...

September 9th, 2014, 10:17 AM  #9 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,146 Thanks: 1003  
September 9th, 2014, 10:23 AM  #10 
Newbie Joined: Sep 2014 From: UK Posts: 7 Thanks: 0  

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