804÷12
=67
so the mean is 67
Answer:
Step-by-step explanation:
3xy +2m +9 -xy +3m -4
add and subtract like terms
=3xy-xy+2m+3m+9-4
=2xy+5m+5
Answer:
If the 7 x 2 is in parenthesis then you would do the 7 x 2 first then do 14 by the power of 3. If there is no parenthesis and the power of 3 is hovering next to the 2 then you would do 2 to the power of 3 and then multiply that by 7.
Step-by-step explanation:
PEMDAS. Whatever is in parenthesis gets solved first, then exponents and so on and so forth.