Múltiples pasos. Marcia hará un marco para su cuadra la longitud del cuadro es de 15 pulgadas el ancho es un tercio de la longitud. Cuanta madera necesita Marcia para el marco

Marcia will need 40 inches of wood for the frame

Step-by-step explanation:

The question in English is

Marcia will make a frame for her painting. The length of the frame is 15 inches, the width is a third of the length. How much wood does Marcia need for the frame?

we know that

The perimeter of a rectangle is given by the formula

where

L is the length

W is the width

we have

the width is a third of the length

so

substitute the value of L

Find the perimeter

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk