Sonar is a device that uses reflected sound waves to measure underwater depths. If a sonar signal has a wavelength of 59 m and the velocity of sound in water is 15,000 m/s, what is the frequency of the signal? A. 0.0039 Hz

B. 254 Hz

C. 885,000 Hz

the frequency of the signal is

b)254hz

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles