What is the estimated probability that at least two of the puppies will be female?
O A. 5/10 = 50%
O B . 8/10 = 80%
O C. 3/10 = 30%
O'D. 7/10 = 70%

B. 8/10 = 80%

Step-by-step explanation:

number of sample space ( that is the total of the results)

n(s) = 10

the question says at least two of the puppies will be female.

let heads,h, = female puppies

then, we check the results;

number of at least two h [n( at least two h)] = , tthh, hhtt, thth, htth, hhht, hhtt, hthh.

n( at least two h) = 8

probability of at least two of the puppies will be female ( pr of at least h) = n( at least h )

n(s)

=8 = 80%

10

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is