Question

Please help! frac%7B1%7D%7B9%7D%20%7D%7Bd%7D" id="TexFormula1" title="\frac{4.2}{7\frac{5}{7} } = \frac{3\frac{1}{9} }{d}" alt="\frac{4.2}{7\frac{5}{7} } = \frac{3\frac{1}{9} }{d}" align="absmiddle" class="latex-formula">

Answer 1

Answer:

d = 40/7

Step-by-step explanation:

Solve for d:

0.544444 = 28/(9 d)

0.544444 = 49/90:

49/90 = 28/(9 d)

49/90 = 28/(9 d) is equivalent to 28/(9 d) = 49/90:

28/(9 d) = 49/90

Take the reciprocal of both sides:

(9 d)/28 = 90/49

Multiply both sides by 28/9:

Answer:  d = 40/7