Porobability distribution of X
x P(x)
0 0.2
1 0.4
2 0.4
Total .1.0
i] Expectation
Mean=Σxp
Variance=x²p-(∑xp)²
thus:
Mean=(0*0.2)+(1*0.4)+(2*0.4)
=0+0.4+0.8
=1.2
ii] Variance
Variance=[(0²*0.2)+(1²*0.4)+(2²*0.4)]-(1.2)²
=[0+0.4+1.6]-1.44
=0.56
hence:
standard deviation=sqrt(0.56)=0.74833
7 and 8 the slope is what is multiplied by x. 9 make y by itself which gives y=3/4x-2. 3/4 is the slope because its multiplied by x. 10 make x by itself to get the x intercept. first subtract 4x. y-4x=-2. then subtract y by both sides.-4x=-2-y. then divide by NEGATIVE 4. after that you will get x intercept form
Answer:
0.5
Step-by-step explanation:
If the 30 is in degrees, then the answer is 1/2 or 0.5. If the 30 is in radians, then your answer is -1.0.
Thirteen trillion, eight hundred two billion, ninety in digits is 13802000000090
Step-by-step explanation:
We need to write Thirteen trillion, eight hundred two billion, ninety in digits.
There are 12 zeros in trillion and 9 zeros in billion
Writing step by step:
Thirteen trillion: 13000000000000
eight hundred two billion: 802000000000
ninety: 90
Combining we get
13000000000000
802000000000
90
----------------------------
13802000000090
So, Thirteen trillion, eight hundred two billion, ninety in digits is 13802000000090
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