Given: klmn is a parallelogram
m∠n=3m∠k, lf ⊥kn , ld⊥nm kf=2 cm, fn=4 cm
find: lf, ld

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?