El área de la región rectangular es 4400cm2. calcula el valor de m

m=52.17

Step-by-step explanation:

The complete question in Spanish is

El área de la región rectangular es 4400 cm2. Calcular el valor de m

largo :2m-20

ancho: m

The question in English is

The area of the rectangular region is 4400 cm2. Calculate the value of m

length :2m-20

width: m

we know that

The area of a rectangle is equal to

where

L is the length

W is the width

we have

substitute in the formula the given values and solve for m

Distribute in the right side

Solve the quadratic equation by graphing

Using a graphing tool

The solution is m=52.17  (the positive value is the solution)

see the attached figure

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6