3x + 4y = 7
-3x + 9y = 6

X=
Y=

Use the foil method to find (z− 5/3 )(z− 2/3 )

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?