Algebra questions for 7th and 8th grade?
i cant help my sister cuz well im not good in math to so i dnt wanna give her the wrong answers so if u wanna help thanks
and this is for the cambridge 9th grade IGCSE exam and shes isnt good in algebra and she has to learn everything from 7 grade to 9th grade so is willing to help please help here are the questions.. answer any of the following please add explaination
http://img504.imageshack.us/img504/5416/image1zw6.jpg
second question :
Given BD = 1 m calculate the lenght of AC
http://img523.imageshack.us/img523/4626/untitledeva4.png
Favorite Answer
The first one (d) is a difference between two squares:
(x ^ 2) / 2 – (4 * y ^ 2) / 18
Multiply by 18
9 * (x ^ 2) – 4 * y ^ 2
= (3 * x + 2 * y) * (3 * x – 2 * y)
The second question has no solution. AC could be of any length.
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