Barry has 4 wooden identically shaped and sized blocks. 2 are blue, 1 is red and 1 is green. How many distinct ways can barry arrange the 4 blocks in a row? Barry's friend Billie is colour-blind and cannot distinguish between red and green. How many of Barry's distinct arrangements would Billie see different?

The distinct arrangement Billie would see is P(n,r)=P(4,2)  =4! ÷ (4−2)! = 12

Step-by-step explanation:

From the question, we recall the following:

Blue = 2, red =1 green =1

The way this can be solved for which Barry can arrange the wooden shaped blocks is applying the method called permutation

So,

4 permutation 3 = P(n,r)=P(4,3)  =4! ÷ (4−3)! = 24

The ways Billie's would see  the permutation arrangement  is 4 permutation 2

With the expression given as

P(n,r)=P(4,2)  =4! ÷ (4−2)! = 12

(-1,0) and (4,0) are x-intercepts.

step-by-step explanation:

x-intercepts are all points on the x-axis.

points (-1,0) and (4,0) are both x -intercepts.

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )