Step-by-step explanation:

Answer:
5.736x^4 - 2x^2 +22x - 54
Step-by-step explanation:
treat the tree trunk as a cylinder
v= pi x r^2 x h
using 3.14 for pi
3.14 x 3^2 x 10 = 282.6 cubic feet
282.6 * 45 = 12, 717 pounds
Answer:
1/(2¹³·3⁷)
Step-by-step explanation:
16²/24⁷
Factor the terms = (2⁴)²/(8×3)⁷
Apply the Power Rule = 2⁸/(2³×3)⁷
Apply the Power Rule = 2⁸/(2²¹ × 3⁷)
Apply the Quotient Rule = 1/(2¹³·3⁷)
According to steam tables, steam produced from liquid water at 100 deg. C and standard atmospheric pressure (101.3 kPa) is 2257.0 kJ/kg.K.
Note : this value varies greatly with pressure and temperature.