a rectangular garden is 10ft long than it is wide. its area is 875ft^2. WHAT ARE ITS DIMENSION? help please .

Question

a rectangular garden is 10ft long than it is wide. its area is 875ft^2. WHAT ARE ITS DIMENSION? help please >.<

yrelhan4 · Answer

Let width be w..
acc to the question its length, say l will be equal to w+10
Area=w*l=w*(w+10)=875
Solve this equation and find the values of w and l..

anonymous · Answer

is that w* length or 1 ?

anonymous · Answer

is it 9.35?

yrelhan4 · Answer

width*length is the area..
your equation would be w^2 + 10w - 875=0..
you just need to solve this quadratic..

anonymous · Answer

howcome its 10w-875=0?

anonymous · Answer

shouldn't it equal 875 instead of zero?

yrelhan4 · Answer

w*(w+10)=875
==> w^2 + 10w=875
==> w^2 + 10w - 875=0

anonymous · Answer

and than i do the plus or minus square root of b^2-4ac divided by 2a?

yrelhan4 · Answer

Discriminant D= b^2 -4ac
x= [-b (+/-)D]/2a..
this is the quadratic formula..

anonymous · Answer

yup

yrelhan4 · Answer

you just need to use this and find the answer.