The first equation will turn into -18x -6y = -18, and the second equation will turn into 14x + 6y = 18. The y terms will cancel out when you add the equations together.
MOE = +\- 1.27
The 99% confidence interval ranges from 53.73 to 56.27 hours.
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Q:

A:
Answer:
Fraction Form: 
Decimal Form: 0.4583
Step-by-step explanation:
Apply the fraction rule: 


Least Common Multiple (LCM) of 12 and 8: 24

Apply the fraction rule:

Answer:
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x+67 + x+127 = 180
or, 2x + 194 = 180
2x = - 14
: . x = -7