Answer:
A: an = 6n - 9
Step-by-step explanation:
third term in an arithmetic sequence is 9
a3 = a + 2d
a + 2d = 9
the fifth term is 21
a5 = a + 4d
a + 4d = 21
a + 2d = 9 (1)
a + 4d = 21 (2)
Subtract (1) from (2) to eliminate a
4d - 2d = 21 - 9
2d = 12
d = 12/2
d = 6
Substitute d = 6 into (1)
a + 2d = 9 (1)
a + 2(6) = 9
a + 12 = 9
a = 9 - 12
a = -3
nth term of this sequence = a + (n - 1)d
= -3 + (n - 1)6
= -3 + 6n - 6
= 6n - 9
an = 6n - 9
Step-by-step explanation:
the answer is 49
I may not be correct
The answer is 500 50 times, 10 is 500
Given:
Height of statue or liberty from the ground = 305 feet
Model is 
the actual size of the statue of liberty.
To find:
The height of the model of statue.
Solution:
According to the question,
Model = of the actual size
Therefore, the height of the model of statue is 3.05 feet.
