The sum of two numbers is 12. the difference of the same two numbers is -4. find the numbers

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

Find the multiplicative inverse of 8-12i

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?