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

Mathematics

2 answers:

densk [106]3 years ago

5 0

Above given answer is correct.

kifflom [539]3 years ago

3 0

Answer:

Step-by-step explanation:

v=√u*u- 2qs

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

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