Solve the system of equations.

x + y = 5
x – y = 9


(7, –2)
Section:  10.1

Mathematics

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Find the greatest common factor of the numbers.108 and 72

A. 12 B. 36 C. 34 D. 18

Mathematics

Simplify the given expression.-2/3

A.  
B. 81
C. 2187
D. 9

Mathematics

Find all specified roots.Seventh roots of 1.

A. 1, cis , cis , cis , cis , cis , cis 
B. -1, cis , cis , cis , cis , cis , cis 
C. 1, cis , cis , cis , cis , cis , cis 
D. 1, cis , cis , cis , cis , cis , cis , -1

Mathematics

Graph the linear inequality.x ? 5

A.

B.

C.

D.

Mathematics