Answer:
100 times
Step-by-step explanation: vibration per second: 50 times
vibration for 2 seconds; 50*2=100 times
Answer:

Step-by-step explanation:
For the 72-deg angle, 6 is the adjacent leg. x is the hypotenuse. The trig ratio that relates the adjacent leg to the hypotenuse is the cosine.





Answer:
-3(x-4)
Step-by-step explanation:
to factor, you have to find the gcf of both numbers. the gcf is -3
<u><em>Answer:</em></u>
x=31/5
Step-by-step explanation: