Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.The numbers below represent the test scores of nine students. 28, 68, 27, 84, 35, 26, 83, 55, 27Find the standard deviation.
A. 26.5
B. 6.0
C. 24.8
D. 23.3
Answer: C
Mathematics
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Graph the polar equation.r = 5(1 -sin ?)
A. 
B. 
C. 
D. 
Mathematics
Sketch the graph of the quadratic function. Give the vertex and axis of symmetry.f(x) = x2 - 4
A. vertex (0, 4); axis x = 0
B. vertex (0, -4); axis x = 0
C. vertex (-4, 0); axis x = -4
D. vertex (4, 0); axis x = 4
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.125i
A. 5 cis 30°, 5 cis 150°, 5 cis 270° B. 5 cis 60°, 5 cis 180°, 5 cis 300° C. 1, -1, -i D. 5 cis 0°, 5 cis 120°, 5 cis 240°
Mathematics
Write the following comparison as a ratio in simplest form using a fraction, a colon (:), and the word to.
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Mathematics