Multiply. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use mathematical induction to prove the statement is true for all positive integers n.9 + 18 + 27 + . . . + 9n = 
What will be an ideal response?
Mathematics
Add.17 + 42
A. 60 B. 59 C. 58 D. -25
Mathematics
Solve the system of equations using substitution.
A. x = 
, y = 
; x = 1, y = 5
or 
, (1, 5)
B. x = - 
, y = 2; x = 1, y = 5
or 
, (1, 5)
C. x = 
, y = 6; x = - 
, y = 
or 
), 
D. x = 
, y = 
; x = - 
, y = 0
or 
, 
Mathematics
Find the solution set of the system.
?
?
A. ?
B. ?
?
C. ?
D. ?
Mathematics