Write -4i as an ordered pair of real numbers.

How can we find the measure of an exterior angle if we know the measurement of an interior angle

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.