Temperature at noon: Tn=-2.9 f
Rate: r=+1.3 f/h
Total decreased: d=-3.7 f 
Temperature at midnight: Tm=?
Tm=Tn+r(6 p.m.-12 m)+d
Tm=-2.9 f+(1.3 f/h)(18 h-12 h)+(-3.7 f)
Tm=-2.9 f+(1.3 f/h)(6 h)-3.7 f
Tm=-2.9 f+7.8 f-3.7 f
Tm=1.2 f
Answer: T<span>he temperature at midnight was 1.2 f</span>
        
             
        
        
        
Answer:
 
Step-by-step explanation:
 The formula that is used to calculate the area of a rectangle is:
 
 Where "l" is the lenght and "w" is the width.
 You know that the area of that rectangle is:
 
 And, according to the exercise, its lenght is 7 more than its width; then:
 
 Then, you can make the corresponding substitution into the formula  :
:
  
 Simplify:
 
 Factor the equation. Find two numbers whose sum is 7 and whose product is -744. These are 31 and -24. 
 Then, you get:
 
 The width of the rectangle is the positive value:
 
 Then, the lenght is:
 
 
        
             
        
        
        
The answer would be (The two ranges are close together, so there are probably no outliers in this set. )
        
             
        
        
        
Answer:

Step-by-step explanation:
Given that , the sum of the first nine terms of an arithmetic series is 162 and the sum of the first 12 terms is 288. 

<h3>
<u>Related</u><u> </u><u>Infor</u><u>mation</u><u> </u><u>:</u><u>-</u><u> </u></h3>
• The sum of n terms of an AP is 
![\boxed{\orange{\sf S_n = \dfrac{n}{2}[2a+(n-1)d] }}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Corange%7B%5Csf%20S_n%20%3D%20%5Cdfrac%7Bn%7D%7B2%7D%5B2a%2B%28n-1%29d%5D%20%7D%7D) 
 
• nth term of an AP is given by ,
