Answer:
2:03
Step-by-step explanation:
If it takes him 27 minutes he should leave the house 27 minutes before he has to go. 2:03 is 27 minutes early
If clearer picture i may help for it is far to dark and clouded to read
Answer: 0.355,0.405)
Step-by-step explanation:
Given : Significance level : 
Number of subjects (n) = 2455
Number of surveys returned = 931
The probability of surveys get return will be :-
The confidence interval for proportion is given by :-
Hence, the 99% confidence interval for the proportion of returned surveys : (0.355,0.405)
Answer:
2 moles of N₂ will produce 4 moles of NH₃
Step-by-step explanation:
Equation of reaction
N₂ + 3H₂ → 2NH₃
The process above is the Born-Harber method of producing ammonia NH₃ industrially.
From the equation of reaction,
1 moles of N₂ will produce 2 moles of NH₃
1 moles N₂ = 2 moles NH₃
2 moles of N₂ = x moles of NH₃
x = (2*2) / 1 = 4moles of NH₃
2 moles of N₂ will produce 4 moles of NH₃
Let y = 0
0 = 2x^2 + 7x + 3
Using the quadratic formula, we get x = -3 and x = -1/2.
