Except there are values you want to substitute into the expression, this is what your answer looks like:
Solve the systems of equation by substitution method.2x+y=13x-y=4
1 answer:
You might be interested in
Answer:
18432 km/h
Step-by-step explanation:
It is given that a sound wave travels through iron at a rate of 5120 m/s.
We know that
1 km = 1000 m
1 hour = 60 minutes
1 minutes = 60 second
Using these conversions we get
1 m = 0.001 km
1 hour = 3600 second
Therefore, the sound wave travels through iron at a rate of 18432 km/h.