False because the internet connects with multiple communication networks to exchange information
Answer: 83.17
Explanation:
By definition, the dB is an adimensional unit, used to simplify calculations when numbers are either too big or too small, specially in telecommunications.
It applies specifically to power, and it is defined as follows:
P (dB) = 10 log₁₀ P₁ / P₂
Usually P₂ is a reference, for instance, if P₂ = 1 mW, dB is called as dBm (dB referred to 1 mW), but it is always adimensional.
In our question, we know that we have a numerical ratio, that is expressed in dB as 19.2 dB.
Applying the dB definition, we can write the following:
10 log₁₀ X = 19.2 ⇒ log₁₀ X = 19.2 / 10 = 1.92
Solving the logarithmic equation, we can compute X as follows:
X = 10^1.92 = 83.17
X = 83.17
When a computer restarts without a hardware power-down-power-up cycle, it is doing an update.
Answer:
b. cart total + 1
Explanation:
A. cart total=1 do increment the total with every 1 click here, it only 're-assigns cart total with value 1 for every click, hence it's always 1.
B. In every click, 1 is always added to the previous value of cart total, like addItemButton(cart total+1) or so.
C. This would have worked too if "cart total" and "cartTotal" where of same type.
D. cart total is just being initially defined here.
E. Likewise here, var shows that cart total has just only been declared.
