a plain is flying at 14,690 well a submarine is submerge at 521 ft below the surface of the ocean what is the difference ​

Step-by-step explanation:

The term ‘elevation’ normally means the measurement above a defined point. Universally we use the 'mean sea level’ as the point of reference for measuring heights. So the airplane is considered to be at the height of 14,690 ft above the mean sea level and the submarine is at 521 ft below the mean sea level.

In case you're wondering what the height of the submarine would be in mean sea level in terms of elevation, it would just be the negative of the given depth. So, the elevation of the submarine can also be expessed as -521 ft mean sea level.

I hope i could clear your query.

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i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!