Question

If $\sqrt[3]{35j-7}=-\frac{1}{2}$, calculate the value of $j$.

• A. $1.375$
• B. $2.118$
• C. $2.599$
• D. $5.125$

Answer 1

Answer: (A)

$1.375$

Given, $\sqrt[3]{35j-7}=\frac{-1}{2}$

On cubing on both sides, we get

$5j-7=\frac{-1}{8}$

$\Rightarrow 5j=\frac{55}{8}$

$\Rightarrow j=\frac{11}{8}$

$\Rightarrow j=1.375$

Hence, option A is correct.