Arrange the vehicles in descending order according to the altitudes at which they operate. vehicle < > altitude (feet) sailboat < > 0 submarine < > -1,500 glider < > 5,000 airship < > 3,000 options> > > > a sailboat, submarine, glider, airship b submarine, sailboat, airship, glider c airship, glider, submarine, sailboat d glider, airship, sailboat, submarine

D.Glider ,airship,sailboat,submarine

Step-by-step explanation:

We are given that

Vehicle              Sailboat     submarine      glider    Airship

Altitude (feet)        0               -1500             5000     3000

We have to arrange the vehicles in descending order according to altitude at which they operate.

Descending order: It is that order in which largest number comes first and smallest number comes last.We go from highest to lowest in this order.

Therefore, 5000 comes first and -1500 comes last because 5000 is largest number and -1500 is smallest number in given numbers.Altitude of glider is largest and altitude of submarine is smallest.

Glider ,airship,sailboat,submarine

D.Glider ,airship,sailboat,submarine

180

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80