Draw a rectangle and label the right side as L-3 and the bottom side as L.
Area is L x W...in this case L(L-3) = 40.....we get
L^2 - 3L = 40 (subtract 40 from each side we get...)
L^2 - 3L - 40 = 0 (factor this out to get the L and W)
8 and 5
Some of the problems are in scientific notation, which if you don't know how to do, I will try to explain, when you see for example 1 x 10^3, what it is saying is basically 1 x 10 x 10 x 10 so in that case 1,000, simple trick is to look at what ever number is in the top right, then add that many zeroes. So this is most likely supposed to be a division problem. if you need more help message me.
Answer:
-5/6
Step-by-step explanation:
Using the slope formula we can easily find the slope
m=(y2-y1)/(x2-x1)
m=(-1-4)/(10-4)
m=-5/6
Answer ( if trying to find x ) :
x = 44
Step-by-step explanation:
5 x 7 = 35 ( area of picture )
120 -> ( area of the whole picture + frame )
120 - 35 = 85 ( area of just the frame )
factor's of 85 -> 1 ,5 ,17 ,85 ( can't be 1 by 85 inch's picture ,so you get 5 by 17 )
5 + 5 + 17 + 17 = 44 (perimeter of the frame ( perimeter formula= l + l + w + w ) )
44 inch's ( ? )
