Three sides of a quadrilateral measure 2.5 centimeters, 1.8 centimeters, and 9 centimeters. If the perimeter of the quadrilateral is 20.9 centimeters, what is the length of the fourth side?7.6 cm 15.7 cm 7 cm 34.2 cm

7.6 centimeters

Step-by-step explanation:

2.5 + 1.8 + 9 + x = 20.9

13.3 + x = 20.9

x = 20.9 - 13.3

x = 7.6

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1