Answer:
Step-by-step explanation:
Given
Solving (a): The mean
Mean is calculated as:
This gives:
Solving (b): The median
Sort the data in ascending order:
The median is:
The 8th item on the sorted dataset is 7; So:
Solving (c): The mode
Because it has a frequency of 3 (more than any other element of the dataset).
Answer:
x =
Step-by-step explanation:
Since it will be easier, just set "ce" as one term. Let ce = y
You are solving for the variable, x. Note the equal sign, what you do to one side, you do to the other.
Do the opposite of PEMDAS.
First, subtract 4 from both sides:
y = 7x + 4
y (-4) = 7x + 4 (-4)
y - 4 = 7x
Next, Divide 7 from both sides:
(y - 4)/7 = (7x)/7
(y - 4)/7 = x
x = (y/7) - (4/7)
Your value of x is
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Answer:
a)
b) Wind capacity will pass 600 gigawatts during the year 2018
Step-by-step explanation:
The world wind energy generating capacity can be modeled by the following function
In which W(t) is the wind energy generating capacity in t years after 2014, W(0) is the capacity in 2014 and r is the growth rate, as a decimal.
371 gigawatts by the end of 2014 and has been increasing at a continuous rate of approximately 16.8%.
This means that
(a) Give a formula for W , in gigawatts, as a function of time, t , in years since the end of 2014 . W= gigawatts
(b) When is wind capacity predicted to pass 600 gigawatts? Wind capacity will pass 600 gigawatts during the year?
This is t years after the end of 2014, in which t found when W(t) = 600. So
We have that:
So we apply log to both sides of the equality
It will happen 3.1 years after the end of 2014, so during the year of 2018.