The energy usage of a light bulb is a function.
The input for the function is <u>time</u> measured in hours.
The output of the function is energy usage, measured in Kilo watts.
<u>E</u> (energy) is a function of <u>t</u> (time).
The graph of the function will show energy usage on the <u>y</u> axis and time on the <u>x</u> axis.
X-Intercept = (2,0) of y=2x-4
To compute the mean, you simply have to sum all the elments in the data set and the divide the sum by the number of elements:
To compute the variance, we first need to compute the distance of each element from the mean. To do so, we build a "parallel" dataset, given by the difference of every value and the mean:
Now we need those difference squared:
The variance is the mean of this new vector, so
Finally, the standard deviation is simply the square root of the variance, so you have
Product of 3 negatives equals a negative answer
Product of 3 positives equals a positive answer
Answer:
Use the equation 250+25w=400+20w
Step-by-step explanation:
Replace w with one of the answers until you get the right one.
pretty sure its 35 but I don't have a calculator with me so double check
