Solve the problem.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 lb
B. 4 lb
C. 3 lb
D. 1 lb
Answer: D
Mathematics
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Name the method that can be used to prove the triangles are congruent.
A. SAS B. SSS C. ASA D. The triangles are not congruent.
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Match the equation to the graph.(y - 2)2 = 7(x + 1)
A. 
B. 
C. 
D. 
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Write the first five terms of the geometric sequence with the given information.an = 7an-1; a1 = 4
A. 28, 196, 1372, 9604, 67,228 B. 4, 28, 196, 1372, 9604 C. 4, 11, 18, 25, 32 D. 7, 28, 196, 1372, 9604
Mathematics
Solve the problem.Use determinants to find the area of the triangle with vertices (-5, -4), (5, 1), and (1, 5).
A. 29.75 B. 31.25 C. 30.0 D. 31.5
Mathematics