What is the probability of Calvin choosing a black face card {J, Q, K} from a pack of 52 playing cards? 23.1%
11.5%
5.7%
30.8%

answer: howdy

step-by-step explanation:

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

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7