Solve.81x2 + 64y2 = 51848y - 9x = 72
A. (0, 8), (0, -9)
B. (0, -8), (9, 0)
C. (0, -9), (8, 0)
D. (0, 9), (-8,0)
Answer: D
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Solve the problem.The half-life of silicon-32 is 710 years. If 50 grams is present now, how much will be present in 700 years? (Round your answer to three decimal places.)
A. 25.245 g B. 0 g C. 0.054 g D. 46.697 g
Determine whether the pairs of lines are parallel, intersect at a single point, or are skew. If the lines are parallel, determine whether they are the same line (and thus intersect at all points). If the lines intersect at a single point, determine the point of intersection.x = 1 + 3t, y = 3 - 3t, z = -t and x = 3 + 4s, y = -1 - 2s, z = 3 - 5s
A. The lines are parallel, distinct lines. B. The lines intersect at a single point, (-5, 1, 3). C. The lines intersect at a single point, (7, -3, -2). D. The lines are skew.
Compute the product.
A. 
B. 
C. 
D. not defined
Use the horizontal-line test to determine whether the function is one to one.
A. No B. Yes