A skydiver jumps out of a plane and her height above the earth can be measured by the equation h=-16t^2-8t+2880 where h is her height above the earth in feet and t is the time in seconds since she jumped How long does it take for the diver to reach earth if she doesn't open her parachute? Round to the nearest tenth of a second (one decimal place) What is the diver's height after 4 seconds? How long does it take for the diver to reach 1000 feet? Round to the nearest tenth of a second. (one decimal place) When the diver reaches 1000 feet, she deploys her chute, which changes the equation for her fall, The new equation is modeled by h=-0.025t^2+1000. How long after she releases the chute will it take for her to reach the ground?

i'm pretty sure it's 477,585,296, but perhaps my math is incorrect.

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

the one below it is a function