Answer:
x<2
Step-by-step explanation:
I didnt feel like typing it out but the explanation is in the picture hope this helps :)
the cost of using broadband in a hotel is £30 per hour formula to work out this total this total cost is cost in pounds = 3× num
2 answers:
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Answer:
Resister of 0.15 W is to be added.
Step-by-step explanation:
In a given circuit we have the attachments
A power supply of 12 V
High intensity LED with forward voltage = 4.5V
LED is rated to withstand a maximum current of 20 mA or
We have to calculate the size of a resister to be connected in series.
Here we will apply the Ohm's law for the calculations
Total voltage of the circuit = voltage of LED + voltage across resistance.
r = (12 - 4.5)/20.10^{-3}
r = 7.5×10^{3}/20 = 375 ohm
Therefore power of the resistance = i².r
= 0.15 W
Therefore a resister of 0.15 W is to be added.
Answer:
The answer is ""
Step-by-step explanation:
For the +4 sample proportion
Sample percentage measurements estimated stdev
Calculating the critical z for a=0.1, two-tailed = 1.64
Calculating the confidence interval: