How many perfect squares less than 100 have a tens digit of 6?
1 answer:
You might be interested in
9514 1404 393
Answer:
see attached
Step-by-step explanation:
a) The first 5 partial sums are listed in the table in the attachment.
__
b) Sigma notation makes use of the general term shown:
__
c) The sum appears to be close to 3/4. (For large n, a calculator cannot evaluate the terms of the series--they are too small.) The attachment shows the 100th sum to be rounded to 3/4 (from 12 significant digits).
For this case, we must find the equation of the line.
The generic equation of the line is:
The slope of the line is:
Substituting values we have:
Rewriting:
We now choose an ordered pair:
(xo, yo) = (0, 12)
Substituting values we have:
Rewriting the equation:
For 20 visits, we evaluate the equation when x = 20.
We have then:
Answer:
The discounted entrance fee is 1.5$. The total cost is 42$ after 20 visits
The generic equation of the line is:
The slope of the line is:
Substituting values we have:
Rewriting:
We now choose an ordered pair:
(xo, yo) = (0, 12)
Substituting values we have:
Rewriting the equation:
For 20 visits, we evaluate the equation when x = 20.
We have then:
Answer:
The discounted entrance fee is 1.5$. The total cost is 42$ after 20 visits