sherry59Sherry59
13.07.2019 •
Mathematics
What is the right anwser for 9+( -6 ) equals
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Ответ:
(+)(+) = (+)
(-)(-) = (+)
(-)(+) = (+)(-) = (-)
9 + (-6) = 9 - 6 = 3
Ответ:
After driving x miles, the first plan costs
60 + 0.70x
dollars, while the second plan costs
0.80x
dollars.
The plans cost the same when these prices are equal:
60 + 0.70x = 0.80x
Solve for x :
60 = 0.80x - 0.70x
60 = 0.10x
x = 60/0.10
x = 600