Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = 1.01x2 + 0.66x + 2.11
B. y = 1.01x2 - 0.66x + 2.11
C. y = 0.53x2 + 4.68x - 2.5
D. y = 0.09 + 8.33x - 6.85
Answer: A
Mathematics
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Find the length of the indicated portion of the curve.r(t) = (2cos t)i + (2sin t)j + 3tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Fill in the missing value.43 hm3 = ______________ km3
A. 0.43 B. 43,000 C. 4300 D. 0.043
Mathematics
Solve the problem.If m?x = 47° in the following figure, find the measures of ?w, ?y, and ?z. 
A. m?z = 47°, m?w = m?y = 133° B. m?z = 133°, m?w = m?y = 47° C. m?z = 47°, m?w = m?y = 43° D. m?z = 43°, m?w = m?y = 133°
Mathematics
Calculate.
A. 7
B. 
C. 
D. 
Mathematics