Answer:

Step-by-step explanation:
We can add the two equations to eliminate the variable
and solve for
:



Now, we can use substitution to solve for
:
(given)




Hope this helps :)
Answer:
820
Step-by-step explanation:
Answer:
1778 cm
Step-by-step explanation:
Answer: 27 x 3 − 270 x 2 + 900 x − 1000
Step-by-step explanation: Expand the expression.