here,
height= 22 cm
radius= 22/2 = 11 cm
we know,
volume of cone= 1/3× πr^2 ×h
= 1/3 ×3.14 × 11× 11 × 22
=2788.76 cm cube
3 Japan tickets cost 27.20
3 Switzerland tickets cost 25.88
Hope this helps :)
Complete question :
The 100m dah times in the girl's track meet were normally distributed with a mean of 13 seconds and a standard deviation of 0.3 seconds.
Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?
Answer:
21 runners
Step-by-step explanation:
Mean, μ = 13 seconds
Standard deviation, σ = 0.3
Lana's race time = 13.2
We find the proportion of runners who had race time above 13.2 ;
Proportion of who had race tune above 13.2
P(x > 13.2)
Obtain the Zscore
Zscore = (x - μ) / σ
Z = (13.2 - 13) / 0.3
Zscore = 0.2 / 0.3 = 0.6667
P(Z > 0.6667) = 0.25239 (Z probability calculator)
This is about 0.25239 * 100 = 25.24% = 25% (nearest percent)
Hence, Number of runners Lana beat = 25% of total runners ;
0.25 * 84 = 21
Hence, Lana beat about 21 runners
8x+11=315 where x = the number of students on each bus
x = 38 students
You can evaluate / find
<span>8.64 x 10^6
-----------------
4.32 x 10^3
by first dividing 8.64 by 4.32 and then dividing 10^6 by 10^3:
2*10^3 (answer)
Please choose the question you want help with next, and post it separately.
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