3 years ago

Just click the picture you don't have to show your work. IF you want to you can tho.

1 answer:

8 0

The correct answer is A.

That is because the whole paragraph talks about a model car that they are testing but this student is wondering about roller coasters.

Hope this helps :)

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The scale on a map shows that 2 inches represents 15 miles. Which proportion can be used to find the actual distance, x, represe

ki77a [65]

2 / 15 = 30 / x.....2 inches to 15 miles = 30 inches to x miles

could also be :

15 /2 = x/30...15 miles to 2 inches = x miles to 30 inches

either way, u will get the same answer

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3 years ago

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Step-by-step explanation:

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3 years ago

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2 years ago

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Whats 58788188 to the nearest million

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Answer:

588,000,000.

Step-by-step explanation:

Inserting commas every 3 digits from the right, we have:

587,881,188 so that is 587 million and 881,000.

As 8 is the next digit after the 587 we add 1 to 587 to make 588 million.

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3 years ago

A special liquid is held in a tank described as (x 2 + y 2 ) ≤ z ≤ 1 in a Cartesian coordinate system. Assume that the density o

vivado [14]

Since $\rho=\dfrac mV$ (density = mass/volume), we can get the mass/weight of the liquid by integrating the density $\rho(x,y,z)$ over the interior of the tank. This is done with the integral

$\displaystyle\int_{-1}^1\int_{-\sqrt{1-x^2}}^{\sqrt{1-x^2}}\int_{x^2+y^2}^1(2-z^2)\,\mathrm dz\,\mathrm dy\,\mathrm dx$

which is more readily computed in cylindrical coordinates as

$\displaystyle\int_0^{2\pi}\int_0^1\int_{r^2}^1(2-z^2)r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta=\boxed{\frac{3\pi}4}$

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3 years ago