Question

Nếu \(\frac{1}{2}\) của a bằng 2b thì \(\frac{9}{8}a=kb\). Vậy k = ?

nhanh nhá...

Answer 1

Ta có: \(\frac{1}{2}a=2b\Rightarrow a=4b\)

\(\frac{9}{8}a=kb\)

\(\Rightarrow\frac{9}{8}.4.b=kb\)

\(\Rightarrow\frac{36}{8}b=kb\)

\(\Rightarrow k=\frac{36}{8}\)

Vậy \(k=\frac{36}{8}\)

Answer 2

4,5

Answer 3

\(\frac{1}{2}a=2b\Rightarrow\frac{1}{8}a=\frac{1}{2}b=>\frac{9}{8}a=\frac{9}{2}b=>k=\frac{9}{2}\)