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scoray [572]
3 years ago
13

A frame holds a picture that is 15in long and x in wide. The frame border is 3in wide around the picture. What expression repres

ents the area of the frame border?
Mathematics
1 answer:
allsm [11]3 years ago
4 0

Answer:6x+126in^2

Step-by-step explanation:

a =15 long

b=x. Wide

A=ax

A=15x represenrs picture area

Add on each side of picture 3 in

a1=15+6=21 in

b1=x+6

Calculate area

A1=a1b1

A1=21(x+6)

Area of frame = A1-A

Area of frame=21(x+6)-15x=21x-15x+126=6x+126in^2

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