1 is D, but that is the only one I know, sorry. I hope this helps! :)
Since 16 - 29 are systems of equations, the easiest way would possibly be through elimination because all you'd have to do is add the two equations then solve for your variable then plug in that number to one of the equations and then solve for the remaining variable, and then you'd get an ordered pair as your solution.
What’s 1 273 miles, tell me what the question actually says or take a pic
Answer:
9x square + y squared + z squared
Step-by-step explanation:
Multiply all the numbers by '-'. Then square them all
