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3 years ago

Please help me I'm really struggling I can figure it out

Mathematics

2 answers:

yan [13]3 years ago

8 0

Answer:

3 oz. Left

Step-by-step explanation:

First there are 16 oz in 1 pound

Multiply 4 by 16

Then divide 3÷4 and multiply that by 16

Your total should be 76

Subtract 76-73

Your answer is 3 oz left

Igoryamba3 years ago

4 0

Answer:

3oz

Step-by-step explanation:

4 lbs=64 oz

3/4 lb=12 oz

64+12=76 oz total

76-73=3 oz left

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Find the surface area of the solid generated by revolving the region bounded by the graphs of y = x2, y = 0, x = 0, and x = 2 ab

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See explanation

Step-by-step explanation:

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$SA=2\pi \int\limits^2_0 x^2\sqrt{1+(2x)^2} \, dx=2\pi \int\limits^2_0 x^2\sqrt{1+4x^2} \, dx$

Apply substitution

$x=\dfrac{1}{2}\tan u\\ \\dx=\dfrac{1}{2}\cdot \dfrac{1}{\cos ^2 u}du$

Then

$SA=2\pi \int\limits^2_0 x^2\sqrt{1+4x^2} \, dx=2\pi \int\limits^{\arctan(4)}_0 \dfrac{1}{4}\tan^2u\sqrt{1+\tan^2u} \, \dfrac{1}{2}\dfrac{1}{\cos^2u}du=\\ \\=\dfrac{\pi}{4}\int\limits^{\arctan(4)}_0 \tan^2u\sec^3udu=\dfrac{\pi}{4}\int\limits^{\arctan(4)}_0(\sec^3u+\sec^5u)du$

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Hence,

$SA=\pi \dfrac{-\ln(4+\sqrt{17})+132\sqrt{17}}{32}$

3 0

3 years ago

Please help me I'm really struggling I can figure it out​

Please help me I'm really struggling I can figure it out