The product of z and 6
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Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Find the solution of this system of equation -7x+y=-20 9x-3y=36