Question

Given that v=√u*u- 2qs. Make q the subject of the equation. Find the value of q in the equation if v=8, u=12, and s=40​

Answer 1

Above given answer is correct.

Answer 2

Answer:

Step-by-step explanation:

v=√u*u- 2qs

1. $\sqrt{20}$ x 20 - 2q40 = 8
2. $2\sqrt{5}$ x 20 - 2q40 = 8
3. 40$\sqrt{5}$ - 2q40 = 8
4. - 2q40 = 8 - 40$\sqrt{5}$
5. -80q = 8 - 40$\sqrt{5}$
6. q = (8-40$\sqrt{5}$ ) / -80 = $\frac{-1 + 5\sqrt{5} }{10}$ = 1.018