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:
common difference: 14
Step-by-step explanation: You have to find out what number it takes to add to the number to get the following number. ex 11+14=25 25+14=39 etc
Answer:
there are many answers. The simplest one is x=1 y=3
Step-by-step explanation:
Answer:
<em>x = 8 </em>
Step-by-step explanation:
3 ln 4 = 2 ln x ( <em>x > 0</em> )
ln
= ln
x² = 4³
x² = (2³)²
x = ± 2³
= 8
= - 8 ( strange root, does not satisfy the domain of given function )
<em>x = 8</em>
42 bundles using a 10% waste factor and assuming you have the easiest of easy roofs to replace. You'll also need underlayments, Ice & Water shield in some areas, proper venting(1 vent per 375/sq ft) and various other accessories