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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>
It is 9 because all the other numbers are in the 80s and 90s 9 is way to low.
Step 1: It tells you that x = 4, so replace x with 4 in the equation. 4 + 3y = 16
Step 2: Use the substitution method to subtract 4 from both sides. (4-4) + 3y = (16 - 4) ——> 3y = 12
Step 3: You must now get the variable y alone, so divide 3 to both sides. 3y/3 = 12/3 ——> y = 4
The answer is (4,4)
Answer:
$70
Step-by-step explanation:
11/5 = 2.2
He got 2.2 pounds per dollar.
