Question

can someone plz help me john played a note on his tuba that vibrated the air 120 times per second if he played the note for 4 seconds how many times did the air vibrate

Answer 1

Step-by-step explanation:

the ans is 124

hope it helps

Answer 2

$\huge \boxed{\mathbb{QUESTION} \downarrow}$

• John played a note on his tuba that vibrated the air 120 times per second if he played the note for 4 seconds how many times did the air vibrate ?

$\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}$

Okay, from the given word problem we can understand that :-

• Time a note takes to vibrate in the air per second = 120 times

We are asked to find how many times the air will vibrate if John played a note on his tuba for 4 seconds. For this, we need to multiply the time taken by the note to vibrate in the air per second into 4. That is, we need to calculate ⇨ 120 × 4

__________________

$\huge\sf\:120 \times 4$

Multiply 120 by 4 to get 480.

$= \huge\boxed{\boxed{\bf \: 480 \: \: times}}$

__________________

So, the answer is ⇨ The air will vibrate about 480 times if John played a note on his tuba for 4 seconds.

__________________