(a) 
= 4n + 8
(b) row 13 has 60 seats
(a)
the sequence of seats is an arithmetic sequence whose n th term is
= 
+ (n - 1 )d
where is the first term and d the common difference
here the sequence is 12, 16, ....
with = 12 and d = 16 - 12 = 4, thus
= 12 + 4( n - 1 ) = 12 + 4n - 4 = 4n + 8
(b)
calculate the number of rows n when 60 seats
solve 4n + 8 = 60 ( subtract 8 from both sides )
4n = 52 ( divide both sides by 4 )
n = 13 ← number of rows
I am assuming this is for a circle??
Area for circle is pi*r^2
you didn't say what to use for pi so I will use 3.14
so area = 3.14 * 6^2
6^2 = 36
so 3.14*36 = 113.04 square feet. Round this answer off as needed.
Answer:
Step-by-step explanation:Let - be a fraction in simplest form, b # 0, written
as a repeating decimal when in decimal form.
Since the only numbers which can be factors of the
denominators lead to a terminating decimal are 1, 2
and 5 (including rising to powers) and combinations
of them, it means that if the denominator has at
least one of the other numbers at the denominator,
the decimal form will be a repeating decimal.
Among the numbers from 1 to 10, the presence of
any of these numbers in the denominator will lead
to a repeating decimal:
Answer:
7.2ft
Step-by-step explanation:
