Answer:
13.13
Step-by-step explanation:
5.25 x 100/40 is 13.125 which rounds up to 13.13
 
        
                    
             
        
        
        
Oh Foxy, Foxy, how totally debilitated you must be !  Try to relax.  Nobody 
enjoys a painful brain, and believe me, this problem is not worth it.
Let me put it to you this way:  What if the problem said . . .
-- Demarcus has $8 more than his sister.
-- His sister has $4.
-- How much money ' M ' does Demarcus have ?
If your brain didn't hurt, you could quickly solve this right in there.
You would know that Demarcus' money ' M ' = 8 + 4 .
That's <em>almost </em>exactly what the problem <em>does</em> say.  
Except it doesn't say he has "$8 more than his sister", 
it says he has "at least" that much.
So you know that ' M ' is not exactly = 8 + 4, but that's the <u>least</u> it could be.
The actual amount of ' M ' is <u>more</u> than that. 
Surely you can handle it from here, even with half of your brain 
tied behind your back.
Take a good hard look at ' A ', and then go lie down.
        
             
        
        
        
9514 1404 393
Answer:
   a)  E = 6500 -50d
   b)  5000 kWh
   c)  the excess will last only 130 days, not enough for 5 months
Step-by-step explanation:
<u>Given</u>:
   starting excess (E): 6500 kWh
   usage: 50 kWh/day (d)
<u>Find</u>:
   a) E(d)
   b) E(30)
   c) E(150)
<u>Solution</u>:
a) The exces is linearly decreasing with the number of days, so we have ...
   E(d) = 6500 -50d
__
b) After 30 days, the excess remaining is ...
   E(30) = 6500 -50(30) = 5000 . . . . kWh after 30 days
__
c) After 150 days, the excess remaining would be ...
   E(150) = 6500 -50(150) = 6500 -7500 = -1000 . . . . 150 days is beyond the capacity of the system
The supply is not enough to last for 5 months.
 
        
             
        
        
        
A half hour is 30 minutes. So you would need to divide 30 by 5 and you get six. Multiple 6 degrees Fahrenheit by 6 and you get 36 degrees. The solution cooled 36 degrees in half an hour. 
Hope this helps!
        
             
        
        
        
Answer:
Yes 1.25 is closer to 1.04
Step-by-step explanation:
Hope this helps!