Answer:

Step-by-step explanation:
Given: A sound wave travels through iron at a rate of 
To find: rate at which the sound wave travel in 
Solution:
Use the following units conversions.


Now convert
into 
Therefore,

Answer:
x=75
Step-by-step explanation:
35+45+x=2x+5
80+x=2x+5
80-5=2x-x
75=x
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Linear functions are given in the form:
y = mx + n
m slope
n y-intercept
Inserting the given values:
-4 = -1m + n
1 = 2m + n
Solve for m and n.
Answer:
765
Step-by-step explanation: