Answer:
A:1
Step by step explanations:
C(n,r)=C(5,5)
n=5
r=5
=n! / (r!(n-r)!)
=5! / (5!(5-5)!)
=1
Step-by-step explanation:
X1 = 1
X2 = (X1) 2 - X1
X2 = 2 - 1
X2 = 1. implies that the second term of the sequence is 1.
Answer
Cut out the shapes, and then multiply them.
Step-by-step explanation:
Answer:
3x + 3y
Step-by-step explanation:
The two minus signs make a plus sign. Therefore, we replace the minus signs with a plus sign, getting 3x + 3y.