Someone smart 20 points not much instruction is left, i'm asked to simplify. i want to know if i got it right or wrong. i don't want the answer i just want to know what my mistake was. i heard that a positive exponent is preferred as a final answer but i'm not exactly sure how to do that.

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?

Need showing work for this problem 56.25 ×25.80

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