myanniespencer39
26.01.2021 •
Mathematics
3) What is the missing value?
20 miles : 3 hours
miles : 1 hour
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Ответ:
7 miles aprox (estimated)
full answer is 6.66666667
Ответ:
(2x+4y=-18) + (2x-4y=30) = (4x=12)
12 / 4 = 3
-18 - 6 = -12
-12 / 4 = -3
x = 3
y = -3