Step-by-step explanation:
x²+ y² -12x - 18y +17 = 0 means : (x²-12x+36)-36+(y²-18y+81)-81-27 =0
(x-6)²+(y-9)² =12²....standard form when the center is (-6 , 9) and radius 12
Answer:
98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day
(0.3672 , 0.7328)
Step-by-step explanation:
<u><em>Explanation:</em></u>-
Given Random sample size n =40
Sample proportion

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

The Z-value Z₀.₉₈ = Z₀.₀₂ = 2.326
98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

( 0.55 - 0.1828 , 0.55 + 0.1828)
(0.3672 , 0.7328)
I think its (the quotient of 3 and x)
sorry if i got it wrong
R - 6m = n.....add 6m to both sides
r = n + 6m <==