.55*X=231 .....X=231/.55.......X= 420
Answer:
x = 13
Step-by-step explanation:
one of the rules of logarithm (for all bases, by the way, not just e for ln) is
so, we have
ln(3²) = ln(x-4)
=>
3² = x - 4
9 = x - 4
x = 13
Formula: Δ L = 10 × log n.
<span>Δ L = level difference. </span>
<span>n = number of equal loud sound sources. </span>
n = 5
10 × log10 5 = +<span>6.9897</span><span> dB compared to the case that only one source is available. </span>
Answer:
.375 and 6/16
Step-by-step explanation:
9.4 cm --- 100%
3.5 cm --- x%
x = 3.5/9.4 * 100 ≈ 37.2%
