Multiply the polynomials. Express the answer as a single polynomial in standard form.(w - r)2
A. w2 - wr + r2
B. w2 - 2wr + r2
C. w2 + 2wr + r2
D. w2 - 2wr - r2
Answer: B
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Solve the problem.A building has an entry with the shape of a parabolic arch 34 feet high and 20 feet wide at the base. Find an equation for the parabola if the vertex is placed at the origin of the coordinate system.
A. x2 = -2.9y B. x2 = -11.8y C. y2 = -11.8x D. y2 = -2.9x
Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = y2(1 - 2x), y(-1) = -1, dx = 0.5
A. y1 = 0.7, y2 = 0.99, y3 = 1.2656 B. y1 = 0.5, y2 = 0.75, y3 = 1.03125 C. y1 = 0.7, y2 = 0.99, y3 = 1.9136 D. y1 = 0.4, y2 = 0.63, y3 = 0.7472
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.20, 13 , 6, -1, . . .
A. an = 7n - 27; a20 = 113 B. an = 7n - 20; a20 = 120 C. an = -7n + 20; a20 = -120 D. an = -7n + 27; a20 = -113
Evaluate the series, if it converges.
A. - 18 B. 27 C. 18 D. Does not converge.