What is the answer to 2/5 =(2.4)/b ?

The answer to 2/5 =(2.4)/b is b=6

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2/5 =(2.4)/b

\frac{2}{5} = \frac{2.4}{b}

b = 6

Solution steps

\frac{2}{5} = \frac{2.4}{b}

Cross multiply

2 b = 12

Divide both sides by

2

b = 6

Verify Solutions

Find undefined (singularity) points:

b = 0

Combine undefined points with solutions:

b = 6

\frac{7}{x + 2} = \frac{3}{x - 5}

\frac{( a ^{3} - 16 )}{8 a} = \frac{3}{8 \cdot a ^{2}}

x^{- 1} 6 x + 64 = 0

lo g_{3} (y + 14) = \frac{1 + 2}{( lo g _{y} ( 3 ) )}

2 (x - [\frac{1}{x}])^{2} + 3 (x + [\frac{1}{x}]) - 12 = 0