Answer:
90% confidence
99% confidence
95%confidence
Step-by-step explanation:
Then next is between 7.0 and 9.0 hours of sleep
The answer is b because 2S + L is equal to L + 2S.
5x + 2y = 12
-6x - 2y = -14
Add them
-x = -2
x = 2
5x + 2y = 12
(5*2) + 2y = 12
10 + 2y = 12
2y = 2
y = 1
Answer:
x=20
y=?
Step-by-step explanation: