21x+1+14x+4=180
35x+5=180
35x=175
X=5
21(5)+1
105+1
Answer
Answer:
-2s
Step-by-step explanation:
2s+(-4s)
2s-4s
-2s
Hope this helps ;) ❤❤❤
An expression is a mathematical phrase containing at least one variable :)
The answer is C. If you use the pythagorean theorem,

, and connect the two points together at a right angle and pug in the lengths of the two lines to the equation then the answer should be C.