Step-by-step explanation:
the formula for the sum of the first n terms of a geometric sequence is
Sn = s1(1 - r^n)/(1 - r)
with r being the common ratio and s1 is the first term.
so,
S15 = 7×(1 - (-3)¹⁵)/(1 - -3) = 7×(1 - -14,348,907)/4 =
= 7×14,348,908/4 = 7×3,587,227 = 25,110,589
Answer:
63,360 people
Step-by-step explanation:
the area of space =
5280 × 20 = 105,600 sq. ft
15 people occupied 25 sq ft
so, the sum of people will aoccupy the space =
105,600/25 × 15 = 63,360 people
70
Since 35 is an angle at the circumference
I think this is how you do it
Answer:

Step-by-step explanation:
Basically the word problem here is trying to get us to find the line using the two points (113,70) and (173,80).
It also tells us by saying that we're modeling the temperature that we're going to be using the y = mx + b formula. m and b are what we'll mainly be looking for.
Let's start by finding m, the slope. We'll be using the point slope formula:

So m = 1/6.
Now let's use that m and choose one of the points (I chose (113,70) ) to plug in everything but b in the original formula

so now that we know our b and our m, we can plug those into the original equation to get our answer!
