Answer:
173.8 units
Step-by-step explanation:
If it's asking for a
139 * 1/4= x
34.75= x
34.75 + 139= 173.75
round to get 173.8
25 - 4x = 15 - 3x + 10 - x
combine like terms
25 -4x = 25 -4x
add 4x to each side
25 = 5x
x= all real numbers
Answer: infinite solutions
It'd be 54. Its flipping the numbers, adding two, flipping again, repeat.
Your answer should be, BTU / cubic foot = 650 (4) (4) / 5000 = 2.08 BTU / ft^3, Hope this helps you! :D