Answer:
B, 6
Step-by-step explanation:
In the equation (x - c)² + (y - d)² = r², (c, d) is the center and r is the radius. In this case, c = -2, d = 7 and r = 6 so the center is (-2, 7) and the radius is 6.
Answer:
12,664
Step-by-step explanation:
The formula to find how many different ways are there to choose a subgroup of r things from a group of n things is
Here, you have 7 trophies and you want to choose 4 of them, so you have
So there are 840 ways to choose your 4 trophies out of the 7 you have.
Answer:
c
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given:
To write: the given expression using summation notation
Solution:
Summation notation helps to write a long sum as a single expression.
In the summation notation, the variable is called the index of summation.
Let denote a set of n numbers.
Then in summation notation,