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Below is the solution:
Rotating around the y-axis; solve for x.
<span>y = x/3
</span><span>x = 3y
</span>
<span>Find x^2
</span><span>x^2 = 9y^2
</span>
<span>Integrating it using the limits of 0 and 3, remember to add the pi and integrate 9y^2.
</span>
The answer is <span>81pi cubic units which is A. </span>
Answer:
Step-by-step explanation:hhhj
Let the number of songs Lou has = X
Kelly has 4 times as many as Lou, which would be written as 4X
Tiffany has 6 times as many songs as Lou, which would be written as 6X
The total number of songs = 682
You need to add all three people together to equal 682
So you would get:
X + 4X + 6X = 682 songs.
Combine all like terms ( 6x + 4x + X = 11x)
11x = 682
Now to solve for X divide both sides by 11:
x = 682 / 11 = 62
Lou = x = 62 songs.
Kelly = 4x = 4(62) = 4*62 = 248 songs.
Tiffany = 6x = 6(62) = 6 *62 = 372 songs.
Answer: 6
Step 1: Subtract 6 to get to 0.
-6 - 6 = 0.
Step 2: Add 6.
0 + 6 = 6.
Answer = 6
