Answer:
Step-by-step explanation:
we have
-----> equation A
----->
-----> equation B
Substitute equation B in equation A
solve for Y
Answer:
2000
Step-by-step explanation:
1km=1000m
2km=2000m
Answer:
12
Step-by-step explanation:
21=31
31=7+2-3+0=12
This is correct because linear equations mean add subtract divide and multiply instead of finding roots and squares
WOW I'm in middle school too and we don't even do this stuff