If an object is dropped from the height of 54 feet the function h=-16t2 +54 gives the height of the object after t seconds approximately how long will it take before the object hits the ground

t= +/-

Step-by-step explanation:

set h=0, 0=-16+54, add the -16 to the other side, 16=54, divide the 16 off, =, square root both sides, t= +/- , t= +/- /4, t= +/- , the object will hit the ground when t= +/-

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870