Answer:
1.307%
4.38%
5.696%
Step-by-step explanation:
The answer stays in school kids I'm not really sure on the answer to ask your teacher.
No because it works for y + x= 9 but not the first one
Answer:
Mathematical reasoning and proof offer powerful ways of developing and expressing insights about a wide range of phenomena. ... Ultimately, a mathematical proof is a formal way of expressing particular kinds of reasoning and justification. Being able to reason is essential to understanding mathematics.