Which inequality represents all values of x for which the quotient below is defined? √x+2÷√5-x​

Which of the following are accepted without proof in a logical system? check all that apply.

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

With number 11 ( show how you got the answer)