Answer:
285.00
Step-by-step explanation:
Because you change 57 to a decimal (57.0) then you multiply.
57.0×2.3=285.00
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69.92 when you add them all up and divide it you get 69.92
50% of 40 is 20.
40/2 =50.
Just divide the number by 2 anytime it asks for 50%.
