A and d seem correct to me.
b and c are definitely wrong.
Answer: 89 x 87 =7,743
Step-by-step explanation:
Answer:
79.5
Step-by-step explanation:
Answer:
(0,6)
Step-by-step explanation:
The given system of equations is

and

We substitute the first equation into the second equation to get:

We expand to get:

We group similar terms to get:



Put x=0 in to the first equation to get:

Therefore the solution is (0,6)