Solve the system of equations by the substitution method. Check your solutions.
A. {(6, 7), (7, 6)}
B. {(6, -7), (7, -6)}
C. {(-6, 7), (-7, 6)}
D. {(-6, -7), (-7, -6)}
Answer: D
Mathematics
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Find the first term and the common ratio of the geometric sequence.1, 
, 3, 3
, . . .
A. a1 = 1, r = 3
B. a1 = 
, r = 3
C. a1 = 
, r = 
D. a1 = 1, r = 
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Solve the problem.The sum of two numbers is 29 and their difference is 1. Find the numbers.
A. 13 and 16 B. 29 and 0 C. 16 and 17 D. 15 and 14
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Find the length of the unknown side of the right triangle with sides a, b, and c, where c is the hypotenuse.a = 6, b = 8
A. 9 B. 7 C. 5 D. 10
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Express in terms of i.
A. 6i
B. ±6
C. i
D. -6i
Mathematics