9. At a restaurant, you can choose 2 different side dishes from a list of 10. The number of possible side dish choices can be counted using: a. permutations
b. combinations

10 How many possible side dish choices do you have
in problem #9?

11. An entry code into a building is a 5-digit number. The number of different codes can be counted using
a. permutations
b. combinations

12. How many different codes are possible in
problem #11.

Pls help, thx a bunch

y -5 = (-1/4)(x + 8)

step-by-step explanation:

table a is wierd

step-by-step explanation:

6*f

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

2: 10

step-by-step explanation: