12-2+22/8 (=12.75 so the option of doing nothing isn't right)
12-(2+2)2/8 (=11 so that option is gone)
(12-2)+22/8 (=12.75 so that option is gone as well)
12-2+(22/8) (=12.75 So that's gone as well)
?????
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Answer:
5/8
Step-by-step explanation:
Subtract the total computers from the old computers.
40-15=25
Then put the number of new computers over the total computers
25/40
Then, simplify
5/8
2.77 × 10 ^ ( -3 ) is the answer