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:
see below
Step-by-step explanation:
• find x
use tan rule
tan( 60 degrees) = x / 7
tan ( 60 ) x 7 = 12 . 1
x = 12. 1
• find y
you can either use Pythagoras theorem or the sin rule
let's use sin
sin ( 30 ) = 7 / y
y = 14.0
hope this helps, please mark it
- Using
substitution
means you are going to solve one equation for one variable and substitute with
its value in the other equation in order to get also an equation with one
variable.
Answer:
-0.025
Step-by-step explanation:
