Answer:
The answer to your question: World's energy = 4.15 x 10 ¹⁶ BTU
Step-by-step explanation:
USA energy = 23.5%
BTU = 97.6 quatrillion = 97600000000000000
World's energy consumption = ?
1 quatrillion = 1 000 000 000 000 000
9760000000000000 --------------- 23.5%
x --------------- 100%
x = 100 x 9760000000000000 / 23.5
X = 4.15 x 10 ¹⁶ BTU
4x + 160y = 120
and
1x + 240y = 80
that will be be the equations. if we multiply the bottom equation by 4 we get:
4x + 960y = 320
now subtract one equation from another:
4x + 160y = 120
-(4x + 960y = 320)
and get:
-800y = -200
y = $0.25
now plug this into one equation
x +240(.25) = 80
x + 60 = 80
x = $20
so $20 per day and $0.25 per mile
Answer:
option D. DE = 11
Step-by-step explanation:
The line DF is equivalent in length to the blue line,
(x + 7) + 7 = 4x + 2
Solve:
x + 14 = 4x + 2
subtract 14 from both sided to get x alone,
x + 14 - 14 = 4x + 2 - 14
x = 4x - 12
subtract 4x from both sided,
x - 4x = 4x - 4x - 12
-3x = -12
divided both sides by -3,
-3x / 3 = -12 / -3
x = 4
Plug in x into DE equation:
x + 7: (4) + 7 = 11
Here is another example of solving for x, give it a try! : brainly.com/question/11979991