7.3.8 Maintaining your balance may get harder as you grow older. A study was conducted to see how
steady
the elderly is on their feet. They had the subjects stand on a force platform and have them react to a
noise. The force platform then measured how much they swayed forward and backward, and the data
is in table #7.3.10 ("Maintaining balance while," 2013). Do the data show that the elderly sway more
than the mean forward sway of younger people, which is 18.125 mm? Test at the 5% level.
Table #7.3.10: Forward/backward Sway (in mm) of Elderly Subjects
19 30 20 19 29 25 21 24 50

5

step-by-step explanation:

answer: i dont know but if you try hard you will get it right : )

step-by-step explanation:

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²