Question

Solve 15/t² = 2/3:
1. +/-2.122
2. +/-2.568
3. +/-4.743
4. +/-4.188

Answer 1

Correct Answer - Option 3 : +/-4.743

Calculation:

The given quadratic equation can be solved as follows:

15/t2 = 2/3

\(\Rightarrow t^2 = \frac{15}{\frac{2}{3}}\)

\(\Rightarrow t^2 = \frac{45}{2}\)

From the above relation we can find t as:

t = √ 22.5 = ± 4.743