Answer:
B. (x +5)² +(y -5)² = 9
Step-by-step explanation:
The standard form equation for a circle with center (h, k) and radius r is ...
(x -h)² +(y -k)² = r²
__
When the center is (h, k) = (-5, 5) and the radius is r = 3, this becomes ,..
(x -(-5))² +(y -5)² = 3²
Simplifying gives ...
(x +5)² +(y -5)² = 9 . . . . . matches choice B
Answer: C
Step-by-step explanation: As the number of trials gets larger the average of the trials approaches the expected value
Answer:
A. 15, 20, 25.
Step-by-step explanation:
25^2 = 625
20^2 = 400
15^2 = 225.
Now 625 = 400 + 225 = 625 so it is choice A.
Answer:
Step-by-step explanation:
Arithmetic sequence:
In an arithmetic sequence, the difference between consecutive terms is always the same, and is called common difference.
The nth term is given by the following equation:
In which 
is the first term and d is the common difference.
First term is 9 common difference is -2
This means that 
So, the nth term is given by:
27^1/3= a number you multiply by itself three times to get 27
Cubic root of 27 is 3
= 3
