Using absolute value, it is found that:
- The situation is described by the following equation:

- The markings should be between 45.5mm and 48.5mm.
---------------------------
The definition of the <em>absolute value function</em> is as follows:


----------------------------
The length should be set to 47mm with an allowance of 1.5mm, which means that <u>the absolute value of the difference between the length and 47 should be 1.5</u>, thus:

----------------------------
The solutions are:


The markings should be between 45.5mm and 48.5mm.
A similar problem is given at brainly.com/question/24514895
Answer:
x = 1; y = 1
Step-by-step explanation:
First thing we will do is work with the first equation:



Now that we have a value for x, we insert that into the second equation, like so:











Now, we solve for x:






Hope it helped,
BiologiaMagister
let y be the horizontal distance and x the vertical
y/400 = cos 20
y=400 cos20
y=376m
x/400 =sin20
x=400sin20
x=137m
C is your answer.
Writing this line to get the max 20 characters ...