madmatt873
13.01.2021 •
Mathematics
If −105 = −7 5 + 2 , then −2 =?
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Ответ:
hi
Step-by-step explanation:
Ответ:
Proportionality:
a:b = c:d
ad = bc
where: cross products are equal.
a = 3.9 milligrams
b = 1/2 oz or 0.5 oz
c = ?
d = 6 oz
3.9 : 0.5 = x : 6
3.9 (6) = 0.5x
23.40 = 0.5x
23.40 /0.5 = 0.5x / 0.5
x = 46.80