Ametallurgist has an alloy with 15% titanium and an alloy with 30% titanium. he needs 100 grams of an alloy with 21% titanium. how much of each alloy should be mixed to attain the 100 grams of alloy with 21% titanium?

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens

Look at the hyperbola graphed below. the hyperbola gets very close to the red lines on the graph, but it never touches them. which term describes each of the red lines? o o o o a. asymptote b. directrix c. focus d. axis

If the value of cos330°is√3/2 then find cos 165°.