Simplify the expression. 7m^2+6.5n-4n+2.5m^2-n
a.) 1.5m^2+4.2n
b.)4.2m^2+1.5n
c.)1.5m^2-4.2n
d.)4.2m^2-1.5n

idk

step-by-step explanation:

use that smart brain

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

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.