(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
Answer:
B) 11√3 - 7√6
Step-by-step explanation:
√48 can be simplified to <em>4√3</em>, and √54 can be simplified to <em>3√6</em>.
The equation is now <em>7√3 - 4√6 + 4√3 - 3√6</em>.
This can be grouped into <em>(7√3 + 4√3) + (-4√6 -3√6)</em>.
We get 11√3 - 7√6.
5+4=9 so 9 is the perimeter of the object cause perimeter is adding
Given:
bottle of room freshener = 40 grams
evaporates at the rate of 15% per day.
f(x) = 40(.85)^x
x y
1 34
2 28.9
3 24.57
4 20.88
5 17.75
<span>graph of exponential function going down from left to right in quadrant 1 through the point 0, 40 and approaching the x axis</span>
Answer
given,
a) x-1=0
adding both side with 1
x = 1
b) x + 1 =0
subtracting both side by 1
x = -1
c) x²- 1 =0
x² = 1
taking square root
x = √1
x = 1
d) x²+ 1 =0
x² = -1
taking square root
x = √-1
x = i (iota)
