Can someone help me with number 16?

Step-by-step explanation:

if we take from south to north as y-axis,west to east as x-axis.

Then position of helicopters are (-20,0) and (15,-15)

a.d=√((15+20)²+(-15-0)²)=√(1225+225)=√1500=10√15

b.

origin is place of rally.

one helicopter is 20 miles south of rally.

other helicopter is at distance=√(15²+15²)=15√2 miles SE of rally.

c.

time taken by first helicopter=(20/80)×60=15 minutes

second helicopter takes time=(15√2/80)×60=(45√2)/4≈15.91 minutes.

i will pick c put check it over to be sure

step-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it