The perimeter of a rectangle is 15.2 km, and it's area is 11.88 km^2. find it's length and width

Let P be the perimeter of a rectangle and A its area. Let W and L be, respectively, the width and length of the rectangle. Find W and L in terms of P and A. 

solution:

P = 2 * W + 2 * L    (1) 

and 

A = W * L    (2) 

solve equation (1) for W: 

W = P / 2 - L 

and W by P / 2 - L in A = W * L to obtain 

A = L * (P / 2 - L) 

Rewrite as a standard quadratic equation in L 

L^2 - L (P / 2) + A = 0 

Solve the above equation for L and find W using W = P / 2 - L. 

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

christopher is 272,195 year old

step-by-step explanation: