Correct + best explanation will get brainliest (25 points) in the triangle below, b = if necessary, round your answer to two decimal places.

Identify the number 127 as a rational or irrational. explain

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

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?