Answer:
b
Explanation:
explained in the newest most recent question u asked
Answer:

Explanation:
The speed of the sound wave is:


The frequency is:



You would first subtract 2 and 15 from both sides so you'll get -(3x+5)= -9 and then the negative would go into the 3 and 5 so it would be -3x-5 = -9 and then you'll add 5 to both sides then divide -3 to both sides so you'll get

but since 2 negative make a positive your final answer is
Historical is the correct answer :)
Answer:
B) it is illegal in the United States
Explanation:
The Australian ballot is another name for a "secret ballot." Since people have traditionally liked to keep their political business to themselves, this type of voting is NOT illegal in the U.S.