4¹²=4ᵃ‐3, what is the value of a?

a = 15

Step-by-step explanation:

Perhaps your question is:

If it is so then let us solve:

Since, bases are equal hence exponents will also be equal. Therefore,

12 = a - 3

12 + 3 = a

a = 15

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