Subtract.- 
A. 3.89
B. 3.8859
C. 3.8869
D. 3.8868
Answer: C
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Find the vertices and foci of the ellipse.9x2 + 25y2 = 225
A. Vertices: (0, ±5); Foci: (0, ±4) B. Vertices: (0, ±9); Foci: (0, ±5) C. Vertices: (±5, 0); Foci: (±4, 0) D. Vertices: (±9, 0); Foci: (±4, 0)
Solve the problem.The surface area of a hollow cylinder (tube) is given by 
where h is the length of the cylinder and R1 and R2 are the outer and inner radii. If h, R1, and R2 are measured to be 8 inches, 8 inches, and 9 inches respectively, and if these measurements are accurate to within 0.1 inches, estimate the maximum percentage error in computing S.
A. 0.034% B. 0.055% C. 0.041% D. 0.028%
Solve the proportion.
= 
A. x = -7, 4 B. x = 7, 4 C. x = -5, 2 D. x = 2, 5
Determine whether the ordered pair is a solution of the given linear equation.5x - 3y = -5; (0, -1)
A. no B. yes