A unit of electricity costs 13.2 pence. On average, tanya uses 90 units of electricity per week. She pays for her bill in 12 wee
2 answers:
Her electricity bill will be of 14256 pence.
<em><u>Explanation</u></em>
On average, Tanya uses 90 units of electricity per week.
So, the <u>total units of electricity in 12 weeks</u> will be: units
One unit of electricity costs 13.2 pence.
Thus, <u>the total cost for 1080 units</u> will be: pence.
So, her electricity bill will be of 14256 pence.
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three squared minus two thirds
three square = 3 x 3 = 9
Least common factor of 1 and 3 is 3
Three squared minus two third is twenty five by three.
Answer:
a)
b)
c)
And then if we solve for t we got:
d) If we find the limit when n tend to infinity for the function we have this:
So then the number of correct responses have a limit and is 0.83 as n increases without bound.
Step-by-step explanation:
For this case we have the following expression for the proportion of correct responses after n trials:
Part a
For this case we just need to replace the value of n=3 in order to see what we got:
So the number of correct reponses after 3 trials is approximately 0.536.
Part b
For this case we just need to replace the value of n=7 in order to see what we got:
So the number of correct responses after 7 weeks is approximately 0.666.
Part c
For this case we want to solve the following equation:
And we can rewrite this expression like this:
Now we can apply natural log on both sides and we got:
And then if we solve for t we got:
And we can see this on the plot attached.
Part d
If we find the limit when n tend to infinity for the function we have this:
So then the number of correct responses have a limit and is 0.83 as n increases without bound.
