Answer:
m=52.17
Step-by-step explanation:
<em>The complete question in Spanish is</em>
El área de la región rectangular es 4400 cm2. Calcular el valor de m
largo :2m-20
ancho: m
<em>The question in English is</em>
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
![A=LW](https://tex.z-dn.net/?f=A%3DLW)
where
L is the length
W is the width
we have
![A=4,400\ cm^2](https://tex.z-dn.net/?f=A%3D4%2C400%5C%20cm%5E2)
![L=(2m-20)\ cm](https://tex.z-dn.net/?f=L%3D%282m-20%29%5C%20cm)
![W=m\ cm](https://tex.z-dn.net/?f=W%3Dm%5C%20cm)
substitute in the formula the given values and solve for m
![4,400=(2m-20)m](https://tex.z-dn.net/?f=4%2C400%3D%282m-20%29m)
Distribute in the right side
![4,400=2m^2-20m](https://tex.z-dn.net/?f=4%2C400%3D2m%5E2-20m)
![2m^2-20m-4,400=0](https://tex.z-dn.net/?f=2m%5E2-20m-4%2C400%3D0)
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
Answers and workings in the attachment below.
Answer:
is it 7815 = 17?
Step-by-step explanation:
im not rly sure how to answer it.
Answer:
u prolly will know if u payed attention in class
Step-by-step explanation: