Which of the following rewrites shows the correct process for completing the square

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

For the sequence [tex]a_{n} = 2n/(n+1)[/tex], what is the value of [tex]a_{10}[/tex]