In
, a sector is bounded by radii
and
and arc
align="absmiddle" style="vertical-align:-4px;" />. If m = 90° and PX = 6 m, find the exact area of the sector.
A. 9
B. 12
C. 3
D. 36
Answer: A
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Give an appropriate answer.Find a point on the surface z = 5x2 + 2y2 where the tangent plane is parallel to the plane .
A. (5, -2, 62)
B.
C.
D.
Use a day counting table to find the exact number of days from the first date to the second date. Assume the year is not a leap year unless otherwise indicated.February 23 to October 16
A. 253 B. 254 C. 235 D. 289
Solve the problem.Let u = -2i + 6j, v = 2i + 3j, and w = i - j. Write u = u1 + u2 where u1 is parallel to v and u2 is parallel to w.
A. u1 = v, u2 = -
w
B. u1 = v, u2 = -
w
C. u1 = 3v, u2 = 2w
D. u1 = -4v, u2 = -18w
Find the vertices and foci of the ellipse. Graph the ellipse.81x2 + 25y2 = 2025
A. Foci at (- 2, 0) and (2
, 0)
Vertices at (-9, 0), (9, 0)
B. Foci at (0, - 2) and (0, 2
)
Vertices at (0, -9), (0, 9)
C. Foci at (-9, 0) and (9, 0)
Vertices at (-81, 0), (81, 0)
D. Foci at (0, -9) and (0, 9)
Vertices at (0, -81), (0, 81)