A baseball manager has 13 people on their team and must select 9 of them to arrange in a line up for batting. How many arrangements are possible?
Question 18 options:

A. 117

B. 362,880

C. 259,459,200

D. 691,891,200

C

Step-by-step explanation:

P(n,r)=P(13,9)

=13!(13−9)!

=2.594592E+8

= 259459200

10 you would take 50/ .2

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct