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3 years ago

1. (39 x 5)

Mathematics

1 answer:

8090 [49]3 years ago

5 0

1. <span>195
2. He is incorrect because 347 - 28 = 319
3. 20 gallons because 1.60 x 20 = 32

</span>

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Write fractions in simplest form 9/10 + (-3)

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2 years ago

Evaluate the given integral by making an appropriate change of variables, where R is the region in the first quadrant bounded by

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$\displaystyle\iint_R\sin(384x^2+486y^2)\,\mathrm dA$

Notice that Given that $R$ is an ellipse, consider a conversion to polar coordinates:

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Then the integral in polar coordinates is

$\displaystyle\frac1{72}\int_0^{\pi/2}\int_0^1\sin(6r^2\cos^2t+6r^2\sin^2t)r\,\mathrm dr\,\mathrm d\theta=\int_0^{\pi/2}\int_0^1r\sin(6r^2)\,\mathrm dr\,\mathrm d\theta=\boxed{\frac{\pi\sin^23}{864}}$

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3 years ago

What is the measure of the missing angle?

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79 degrees

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2 years ago

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2 years ago

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