Pls help and show workings Thank you in advance
Option
A. 7
B. 10
C. 13
D. 22

D. 22

Step-by-step explanation:

Because if the missing side is 22 cm, the other two sides' sum would have to be greater than 22, but 13 + 9 = 22.

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