Simplify the expression so that they are no complex numbers in the denominator. -2+i
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-4-5i

Please help

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.