<h3>Answer:</h3><h3>Exact area =
square cm</h3><h3>Approximate area = 2.598 square cm</h3>
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Work Shown:
s = side length of equilateral triangle = 1 cm
A = area of equilateral triangle with side length 's'
This is just one of the 6 equilateral triangles (see diagram below)
Multiply by 6 to get the area of all 6 equilateral triangles, or the entire hexagonal area
Answer:
Step-by-step explanation:
Work = force × distance
force = mass × acceleartion due to gravity
a four ton satellite will have a force of 4× 1000 ×10 = 40KN (1000Kg = 1 ton)
1 mile = 1609.34 metre
therefore (a) 100 miles above the earth
work = 40000 × 100×1609.34
= 6437360000J
=6.4GJ
(b) 300 miles above the earth
work = 40000×300×1609.34
= 1.93×10¹⁰ J
Answer:
perimeter=sum of all sides
p=2(L+W)
36=2(L+12)
36-24=2L
12=2L
L=6
It takes Andre 1.25 minutes to swim a lap.
Step-by-step explanation:
Answer: Even is not unusual.
Step-by-step explanation:
Given:
P = 0.10
n = 1200
x = 132
1. Sample of proportion ( ˆp ) = x/n
= 132/1200
= 0.11
2. Z = ˆp - p / √p ( 1 - p )/ n
= 0.11 - 0.10 / √0.10 ( 1 - 0.10 ) / 132
= 0.01 / 0.02611
= 0.3829
3. Probability
P ( ≥ 132 ) = P( Z > 1.50 ) = 1 - P( Z > 1.50 )
= 1 - 0.9332
= 0.0668
The probability is higher than (0.05). Which makes the event unusual, therefore there is no enough evidence which suggest that the number of Americans who are afraid to fly has increased.
