Shawn's solution is marked incorrect. Which best explains Shawn's error?

A. Shawn added 4 to both sides of the equation
instead of subtracting 4.

B. Shawn multiplied by -5 on both sides of the
equation instead of multiplying by - 1/5

C. Shawn multiplied by -5 on both sides of the
equation instead of dividing by - 1/5

D. Shawn subtracted 3/5 x on the left side of the
equation instead of adding 3/5 x.

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: