Evaluate each expression (-6)^-5

8^-4

2^-9

(-7)^-3

Step-by-step explanation:

1.) 8^-4

1/8^4 = 1/4096

2.) 2^-9

1/2^9 = 1/512

3.) (-7)^-3 =1/(-7)^-3

= 1/-343

5/12, or 5: 12

step-by-step explanation:

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