A couple plan s to have children until they get a girl, but they agree that they will not have more than three children even if all are boys. (Assume boys and girls are equally likely.) a) Create a probability model for the number of children they might have.
b) Find the expected number of children.
c) Find the expected number of boy s they 'll have.

b) 1.75       c) 0.875

Step-by-step explanation:

lt is given that a couple plans to have children until they get a girl, but they agree that they will not have more than three children even if all are boys.

a) The possible combination for the number of children  that a couple might have  :

  X             1st girl      1st boy, 2nd girl       1st ,2nd boys,3rd girl    1,2,3rd boys Probability-   0.5                 0.25                        0.125                           0.125

b) Expected number of children   :

   1(0.5) + 2 ( 0.25 ) + 3 ( 0.125)  + 3( 0.125)

   =  1+ 0.75

   = 1.75

c) Expected number of boys :

     0 x 0.5  + 1 x 0.25  + 2 x 0.125 + 3 x 0.125

    =    0.875    

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq