6/10 is equal to 0.60
9/12 is equal to 0.75
your answer is not above for D but if D is < then that would be the correct answer :)
Answer:
2(cos135° + isin135°)
Step-by-step explanation:
z^6 = 64i
We need to change i to polar form
cos (90) + isin (90) = i
x^6 = 64 cos (90) + isin (90)
Now we need to take the sixth root of each side
(x^6) ^ 1/6 = ((64)( cos (90) + isin (90)) ^ 1/6
(x^6) ^ 1/6 = ((64) ^ 1/6 * cos (90) + isin (90)) ^ 1/6
(x^6) ^ 1/6 = 2( * cos (90) + isin (90)) ^ 1/6
We we take the roots of the trig functions, we have 6 roots
360/n means the roots are 60 degrees are apart
take 90 /6 = 15 degrees
The first root is at 2 (cos (15) + isin (15))
The second root is at 2 (cos (15+60) + isin (15+60))
2 (cos (75) + isin (75))
The third root is at 2 (cos (75+60) + isin (75+60))
2 (cos (135) + isin (135))
and so on
Answer:
True
Step-by-step explanation:
The given event has more than one outcome and hence is a compound event. The sum of all the probabilities of all the outcomes is 1.
Answer:
z=(x-mu)/o
Step-by-step explanation:
X - Heights of women aged 20 to 29: X is N(64, 2.7)
Y - Heights of men aged 20 to 29: X is N(69.3, 2.8)
a) X=6'=72"
b) Y = 72"
c) 72' women can be taken as very tall but men moderately taller than average
d) Y<5'5" =65"
e) X>73"
Z>
Almost 0% can be taken
f) IQR =Q3-Q1