Solve.The outside of a water storage tank is in the shape of a sphere. If the radius is 19.4 feet, approximate the volume of the tank in cubic feet. Use ? = 3.14 and round to the nearest hundredth, if necessary.
A. 1181.77 ft3
B. 1575.69 ft3
C. 30,568.46 ft3
D. 22,926.35 ft3
Answer: C
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Provide an appropriate response.A hypothesis test is conducted with the following hypotheses: Null hypothesis: population mean = 100 Alternative hypothesis: population mean > 100A sample is selected and the sample mean turns out to be 118If the result is significant at the 0.01 level, which of the following is true?
A. If the null hypothesis were true, the chance that the sample mean would have been as big as 118 or bigger is greater than 0.01. B. If the null hypothesis were true, the chance that the sample mean would have been as small as 118 or smaller is less than 0.01. C. If the null hypothesis were true, the chance that the sample mean would have been as big as 118 or bigger is less than 0.01. D. If the alternative hypothesis were true, the chance that the sample mean would have been as big as 118 or bigger is less than 0.01.
Write the complex number in rectangular form.-3(cos 225° + i sin 225°)
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Provide an appropriate response.Tell how you would split an amount according to a given ratio.
What will be an ideal response?
Identify the conic section represented by the equation.8x2 - 7y2 - 16x + 56y - 160 = 0
A. hyperbola B. parabola C. circle D. ellipse