Answer:
the velocity of the wave would be 1.5m/s
For this case we have the following inequality:

We must clear "y", so, we have the following steps:
1st step:
Apply distributive property to the right side of the inequality:

2nd step:
We add similar terms:


3rd step:
We add 48 to both sides of the equation:

4th step:
We divide between 22 on both sides:

Thus, the result is given by: 
Answer:
Option 1
Answer:
m∠ADC = 90°
5x-5 = 90
x = 19
Step-by-step explanation:
10. Not sure what the question is. Looks like it could be to write 9/5 in decimal form? In that case, we have 1/5 = 0.2, so 9/5 = 9*0.2 = 1.8
11.
. If we round to 5 decimal places, the approximate value is 52.23232
12. By long division, we can show that
. In repeated decimal notation, that's 