D. Warm air rises and cool air sinks
Answer:
S12 for geometric series: (-7.5) + 15 + (-30) + ... would be: 10237.5
Step-by-step explanation:
Given the sequence to find the sum up-to 12 terms

As we know that
A geometric sequence has a constant ratio 'r' and is defined by


















∵ 



Thus, S12 for geometric series: (-7.5) + 15 + (-30) + ... would be: 10237.5
Answer:
2157
Step-by-step explanation:
The given function is

We want to find f(c) when c=3.
This means the remainder when f(x) is divided by x-3
We perform the synthetic division:
5 10 3 8 -6 -3
<u>3| 15 75 234 726 2160</u>
5 25 78 242 720 2157
Therefore the remainder is 2157
You are right
Factor to find the roots.
(x+5)(x-1)=0
Proof:
5-1=4
5*-1=-5
Then apply the Zero Product Property.
(x+5)=0
x=-5
(x-1)=0
x=1
Roots: x=-5, x=1
Answer: 
Step-by-step explanation:
Given: The width of the room =
The length of the room =
The area of the rectangular room= 
⇒The area of the rectangular room= 
⇒The area of the rectangular room= 
⇒The area of the rectangular room= 