Question in image above! ​

Is the orthocenter of a triangle on the inside ?

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)

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd