Answer: the answer is 224cm3
 
        
             
        
        
        
Answer:
   66 °F
Step-by-step explanation:
At 4 P.M., the temperature had decreased by 3° from the temperature at 3 P.M., so was ...
   4 P.M. temp = 78 °F -3° = 75 °F
This was repeated until 7 P.M.
   5 P.M. temp = 75 °F -3° = 72 °F
   6 P.M. temp = 72 °F -3° = 69 °F
   7 P.M. temp = 69 °F -3° = 66 °F
The temperature at 7 P.M. was 66 °F.
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Of course the repeated subtraction can be simplified using multiplication. The subtraction of 3° four times is equivalent to the subtraction of . . .
   (3°)(4) = 12°
That is, the temperature at 7 P.M. is ...
   78 °F -3°×4 = 78 °F -12° = 66 °F
 
        
             
        
        
        
Answer:
B. No.
Step-by-step explanation:
We have been given 3 side lengths 7 ft, 12 ft, 17 ft. We are asked to determine, whether the given set of lengths can form a right triangle or not.
We will use Pythagoras theorem to solve our given problem, which states that the square of hypotenuse of a right triangle is equal to the sum of squares of two legs of right triangle.



Since the sum of  squares of both legs is less than square of hypotenuse, therefore, the given set of lengths can not be the side lengths of a right triangle.
 
        
                    
             
        
        
        
R/9 = -21
Multiply by 9
r = -189
        
                    
             
        
        
        
Answer: It should be an 8th grade level 
(sorry if i'm wrong)
:(