Answer:


Step-by-step explanation:
Given


Represent the combination of f(n) and g(n) with A(n)
So, we have:

This gives:

To calculate the 11th term, we make use of n = 11


This gives:



Approximate to 2 dp

Answer:
X = 18
Y = 9√3
Step-by-step explanation:
use sin equation for right angle triangle
The sine of the angle
= ( the length of the opposite side ÷ the length of the hypotenuse.)
according to this question,
sin 30 = 9 / X
1/2 = 9 / X
X = 18
use cosine to find y
The cosine of the angle
= (the length of the adjacent side ÷ the length of the hypotenuse.)
cos 30 = y/x
√3/2 = y/ 18
y = 9 ✓3
Sales tax is:
$35* (6/100)= $2.10
$35+ $2.10= $37.10
The total cost of the doll (including sales tax) is $37.10~
Answer:
B.) √3/2
Step-by-step explanation: