Determine which of the expressions are equivalent. :: (3+9i) + (-9+i)
:: (1 + 2i) – (7 + 8i)
:: 14-(4-3i) - 9i
:: -8- (-2+i) +11i
:: 3i(4 + 2i)
:: (2+2i)(1+4i)

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

the answer is 0.071

good luck! : d

10010010001010010101001001010010100101010010101010010010101010110010001011010010010001

step-by-step explanation:

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney