Answer:
The correct answer is option 3. (20, 4, 5)
Step-by-step explanation:
To solve this problem we use the substitution method.
(i)
(ii)
(iii)
We start by clearing x in (iii) and clearing y in (ii).
(iii)
(ii)
Now we substitute (iii) in (ii)
(iv)
Now we substitute (iii) and (iv) into (i) and clear z.
(v)



If
(v)
We substitute (v) in (iii) and then substitute (v) in (iv)

The correct answer is option 3.
Answer:
1. 6a+1
2. 7a+5
3. 6-a
4. 6a-1
5. 1
6. 40
7. a-1
Sorry if they are wrong...
The answer would be c. I can give an example if you want
Answer:
3090
Step-by-step explanation:
times 1,030 to 3.
7 is 45 degrees ndhdhdhdjdj