Kenshin

the length of a rectangle is three meters more than the width. The perimeter of the rectangle is 34 meters find the width of the rectangle.

The area of a triangle is 25 cm squared. The base is twice the hight find the hight of a triangle. please help me I cant do it without a help!!!

Im begging! please someone teach me how to answer this! when 3 times a number is added to the square of a number the result is ten find the number. I don't know where to start but please teach me or tell me the process to answer this,even just a process....

WHAT IS WORK?

25=x(x)2 over 2 =25.2 =50 50=x(x)2 =x(x)2-50 is this right? I don't know the factor of 50 and I don't know whats next help!!!!!!!!!!!!!!!