If the scale factor of figure A to figure B is 4:5, find the value of x.

x = 12

Step-by-step explanation:

triangle A and B have

scale factor is 4:5

x:15=4:5

if x=12

then 12:15=4:5

answer is

x=12

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

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