Find the equation of the indicated least-squares curve. Sketch the curve and plot the data points on the same graph.For the points on the following table, find the least-squares curve y = mx2 + b.
A. y = 4.14x2 + 1
B. y = 1.07x2 - 0.76
C. y = 2.14x2 - 1.52
D. y = 3.5x2 + 5.9
Answer: C
Mathematics
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Solve the problem.The mass of one oxygen molecule is 5.3 × 10-23 gram. Find the mass of 2000 molecules of oxygen. Express the answer in scientific notation.
A. 1.06 × 10-20 g B. 1.06 × 10-18 g C. 1.06 × 10-19 g D. 1.06 × 10-21 g
Mathematics
Find the LCM by factoring.9, 18, 22
A. 396 B. 22 C. 198 D. 3564
Mathematics
Find the real zeros, if any, of each quadratic function using the quadratic formula. List the x-intercepts, if any, of the graph of the function. g(x) = x2 - 12 - 9x
A. x = 
B. x = 
C. x = 9, x = 12
D. No real zeros or x-intercepts
Mathematics
Find the area of the shaded region.
A. 276 m2 B. 322.5 m2 C. 318 m2 D. not enough information given
Mathematics