Answer:
3 and 1/24
Step-by-step explanation:
8 and 5/12 - 5 and 3/8 = 73/ 24 or 3 and 1/24
Answer:

Step-by-step explanation:
We have a geometric sequence with:
,
, and 
Where
Sn is the sum of the sequence
r is the common ratio
is the first term in the sequence
n is the number of terms in the sequence
The formula to calculate the sum of a finite geometric sequence is:

Then:

Now we solve for 


Answer:
40
Step-by-step explanation:
8 = x/5
x = 8*5
x = 40
Answer:
sec(- θ ) = secθ
Step-by-step explanation:
The relationship between sec and cos is
sec x = 
Now cos(- x) = cosx
Thus
sec(- θ ) = secθ
Answer:
This isn't an equation, because an equation can only have one = sign.
Step-by-step explanation: