8x+(4*30)=6(6+30)
8x+120=6x+180
2x=60
x=30 pounds of coffee
Answer:
2x-3
Step-by-step explanation:
Answer:
The energy in object is 3.8 Kilo Joules.
Step-by-step explanation:
We are given the following in the question:
Mass = 20 kg
Height,h = 20 m
g=9.5 m/s^2
Formula:
Potential energy =

Putting value we get,

Thus, the energy in object is 3.8 Kilo Joules.
A = pi r^2
a = 3.14 * 97^2
a = 29,544.26 mm^2
3.8 is the answer you already figured it out