Three towns are located on the earth's surface at the following coordinates :P(60°N,35°W),Q(75°N,145°E),R(60°N, 25°E). A commercial airliner A whose speed is600km/h flies from p to q using the shortest route possible . A similar airliner B takes off from P at the same time as A and flies to town R along the parellel of latitude. Both air lines fly at the same speed. Giving your answer to the nearest minute ,determine which airliner arrives at its destination earlier and by how long. Use radius of the Earth as 6370km(ans is airline B ,2h 47min could you please show me the working )

What is a rational number between 9.5 and 9.7

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? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.

Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm.it decreased by the same amount each year. what was the change in grandpa ernie's height each year