on a road trip, sandy drives 368.7 miles. Her car uses a total of 18 gallons of gas. About how many miles per gallon does sandy'
1 answer:
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a. ×
A
b. ×
A
c. A
The LED which would glow brightest is LED C with the greatest current and voltage
The LED which would be the most dim is LED B with low voltage and consequently low current.
<h3>How to determine the current</h3>The formula for finding current
I = V/R
Where v = voltage
R = resistance
A. V = 12V
R = 4. 7 + 15 = 19. 7 kΩ = 19700 Ω in series
×
A
B. V = 9V
R = 4. 7 + 1 = 4. 7 kΩ = 4700Ω in series
×
A
C. V= 12V
1/R = =
×
R = = 310. 56 Ω
A
It is important to note that the brightness of a bulb depends on both current and voltage depending on whether the bulb it is in parallel or series.
The LED which would glow brightest is LED C with the greatest current and voltage
The LED which would be the most dim is LED B with low voltage and consequently low current.
Learn more about Ohms law here:
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Answer:
The confidence interval is
Step-by-step explanation:
From the question we are told that
The sample mean is
The standard deviation is
The sample size is
given that the confidence level is 85% then the level of significance is mathematically represented as
Next we obtain the critical value of from the normal distribution table the value is
Generally the margin of error is mathematically represented as
=>
=>
The 85% confidence interval is mathematically represented as
=>
=>