Answer:
(x + 4)^2 + (y-9)^2 = 121
Step-by-step explanation:
We can write the equation of a circle as
(x-h)^2 + (y-k) ^2 = r^2 where (h,k) is the center and r is the radius
(x - -4)^2 + (y-9)^2 = 11 ^2
(x + 4)^2 + (y-9)^2 = 11 ^2
(x + 4)^2 + (y-9)^2 = 121
Answer: (1.375, 18.625 )
Step-by-step explanation:
The confidence interval for population mean is given by :-
(1)
, where = sample mean
t* = critical value.
SE = standard error
As per given , we have
n= 21
Degree of freedom : df = n-1=21-1=20
Significance level :
Standard error : SE= 5
The critical t-value for confidence interval is a two-tailed value with respect to the given degree of freedom i.e. .
Using student's t-distribution table ,
The 90% confidence interval will be :
[by formula in (1)]
Hence, the limits of the confidence interval=(1.375, 18.625 )
Answer:
la forma por el vector -1 5
Step-by-step explanation:
"Have only 1 and itself as a factor" is definition of prime
so each factor must be prime
let ssay 2
2 is prime
2^4=16
a number is 16
Y= 1 - 5x^2
now, f(3) = 1 - 5 (3)^2
= 1 - 5(9) = -44