What is the solution to the following system?
X+2y+z=9
X-y+3z=13
2z=10

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?