What are the coordinates of the midpoint of the line segment with endpoints r(4, -7) and s(-3, 5)?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

What is the prime factorization of 23 ?me with this question

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)