Answer:
-18
Step-by-step explanation:
-8 + (-10)
-8-10
-18
Hope this HELPS
1.Consider the system of equations. x-5y=2
3x-10y=11
(a) Jamar rewrote the first equation as –2x + 10y = –4. What justification did he have for doing this?
(b)Jamar combined the equation in Part (a) with the second equation in the system to get x = 7. Explain Jamar’s reasoning.
(c) What is the solution of the system? (d) How do you know, without graphing, that the graph of 4x – 15y = 13 passes through the point whose coordinates are the solution of the system?
Answer:
6,371.15
Step-by-step explanation:
3.14 times 13^2 times 12
It would be -40,20 and -10,-20