Answer:
Correct choice is A
Step-by-step explanation:
Note that the denominator
Then rewrite the numerator
as 
Substitute both expression into the initial expression:

Answer:
x = 6,0
y = 0,12
Step-by-step explanation:
P=10C2×<span>.1^2</span>×<span>.9^8. You should know how to calculate from here.</span>
If n = number of hours and the equation is 174 + 58n then the answer is 3 hours
174 = 58n
÷ 58
3 = n
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