 | | From: | Nathan | | Subject: | Yr11 2 Unit/3Unit Algebra Help Problem Solving | | Date: | 6 Jan 2005 02:15:16 -0800 |
|
|
 | Hi there could somone help me with either of these problems please dont
think I am trying to get anyone to do my homework, I had around 250+
Prep questions to do and have done them all except for the few I have
posted on this newsgroup. I have also attempted to show my working out.
Thanks For your Help
Nathan
Question 1
----------
In a right angle triange the hypotonuse is 15cm
If the 2nd side is twice the length of the 3rd calculate the length of
the shortest side
My Working:
(a^2)+(b^2)=(c^2)
=(2x^2)+(x^2)=15^2
=(2x^2)+(x^2)=225
|
|
| | From: | James Midolo | | Subject: | Re: Yr11 2 Unit/3Unit Algebra Help Problem Solving | | Date: | Fri, 7 Jan 2005 07:40:00 +0800 |
|
|
|
"Nathan" wrote in message
news:1105006516.814527.12580@c13g2000cwb.googlegroups.com...
> Question 1
> ----------
> In a right angle triange the hypotonuse is 15cm
> If the 2nd side is twice the length of the 3rd calculate the length of
> the shortest side
> My Working:
> (a^2)+(b^2)=(c^2)
>
> =(2x^2)+(x^2)=15^2
> =(2x^2)+(x^2)=225
a^2 + b^2 = 15^2
b = 2a
a^2 + (2a)^2 = 225
a^2 + 4a^2 = 225
5a^2 = 225
5a^2 - 225 = 0
a = 6.708
b = 13.416
The shortest side is approximately 6.708cm. The answer has an exact value
(which could be simplified) of: (sqr(4500)/10)cm.
Regards,
James Midolo
|
|
| | From: | Nathan | | Subject: | Re: Yr11 2 Unit/3Unit Algebra Help Problem Solving | | Date: | 6 Jan 2005 17:21:14 -0800 |
|
|
| Hi there thank you fo rmaking this clear to me
Sincerly
Nathan
|
|
