Hello There!
The answer you have selected, (D) is correct!
To get the answer you simply add the two fractions together. and 9 + 4 = 13.
13/10 is also called an irrational fraction, the more you know~
Have a great day, and maybe brainliest?
Answer:
4
__
13
Step-by-step explanation:
look up top for explanation
The Awnser would be 20.6 rounded up to 21. The final Awnser is 21
The string would have to be 4 feet long to have a frequency of 400cps because each foot=100cps