The base of a solid right pyramid is a square with an edge length of n units. The height of the pyramid is n-
1 units
Which expression represents the volume of the
pyramid?
nin – 1) units 3
kin(n − 1)2 units
in?(n − 1) units
in?(n − 1) units
(n-1)
n
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answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.