In Madras, temperature at noon varies according to -t^2/2 + 8t + 3, where t is elapsed time. Find how much temperature more or less in 4pm to 9pm.

• substitute 4 and 9 in equation, and take the difference of values,that is the answer
• 12 years agoHelpfull: Yes(1) No(0)
• Sol. In equation first put t=9,
  we will get 34.5...........................(1)
  now put t=4,
  we will get 27..............................(2)
  so ans=34.5-27
  
  =7.5
• 10 years agoHelpfull: Yes(1) No(0)
• At 9pm 7.5 more
• 12 years agoHelpfull: Yes(0) No(3)
• At 9pm 7.5 temperature is high
• 12 years agoHelpfull: Yes(0) No(2)
• at 9 p.m. 72.5 more temperature
• 12 years agoHelpfull: Yes(0) No(0)