Answer:
Nikolaus Otto was responsible for inventing the first working four-stroke engine.
Step-by-step explanation:
I'm pretty sure it's graph A. I apologize if it's wrong hope this helped.
Answer: b) multiply row 1 by -3 and add the result to row 2
Step-by-step explanation:
Answer:
First one is 25/2
Step-by-step explanation:
12×2+1=25/2
9×4+1=36/4
cross multiply and you get
100/
divide both by 2 and you get 50/4 then you divide both by 2 again and you get 25/2 because you can't reduce it anymore
