Question

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Answer 1

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$\frac{ \sqrt{28} }{4} \div \frac{ \sqrt{7} }{3} = \\ \\ \frac{ \sqrt{28} }{4} \times \frac{3}{ \sqrt{7} } = \\ \\ \frac{3 \sqrt{28} }{4 \sqrt{7} } = \frac{3}{4} \sqrt{ \frac{28}{7} } = \frac{3}{4} . \sqrt{4} = \frac{3}{4} .2= \frac{6}{4} = \frac{3}{2} \\ \\ Letra~~A$