-9x + 15 = -48 ?????????????????????/
1 answer:
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a)
the average speed, well it does 10 ft in 1.6 secs, so is simply their quotient, 10/1.6 = 6.25 ft/s on average.
b)
over the horizontal, well, it covered horizontally 9.25 ft in those 1.6 secs, so their quotient is 9.25/1.6 = 5.78125 ft/s on average.
c)
we don't know the vertical distance, but
so, it covered vertically about 3.8 ft in those 1.6 secs, so then 3.8/1.6 = 2.375 ft/s on average
"97.5" will be the American women's % having their shoe sizes that are no more than 11.33.
Given values are:
- Mean = 8.33
- Standard deviation = 1.5
Now,
=
= (2 above Standard deviation)
→ The data values are between 8.33 and 11.33,
=
= (%)
→ The data value below 11.33,
= (%)
hence,
→ The percentage of American women will be:
=
= (%)
Thus the above answer is appropriate.
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