Answer:
mean of this demand distribution = 100
Step-by-step explanation:
To find the mean of this demand distribution;
Mean = Expected vale = E[x]
for discrete provability function,
we say E[x] = ∑(x.p(x))
x p(x) x.p(x)
10 0.1 1
30 0.4 12
60 0.4 24
90 0.7 63
∴ ∑(x.p(x)) = ( 1 + 12 + 24 + 63 )
∑(x.p(x)) = 100
Answer: B
Step-by-step explanation:
The shorter arrow is the hour while the longer arrow is the minutes. Since the shorter arrow is between one and two, the hour would be one. The clock goes by minutes, and each of the dashes are a minute. There are 60 dashes for 60 minutes. From 12 to 1, it's 5 minutes. It's the same for 1 to 2, 2 to 3, and so on. So 7 × 5 is 35 + 4 is 39, where the longer arrow is placed. So the time is 1:39.
From X + Y = 4
<span>Y = 4 - X </span>
<span>Substituite this for Y in 2X - Y = 2 to get </span>
<span>2X -(4 - X ) = 2 </span>
<span>2X -4 +X = 2 </span>
<span>3X = 6 </span>
<span>X = 2 </span>
<span>Now return to X + Y = 4 </span>
<span>Knowing X = 2, </span>
<span>2 + Y = 4 </span>
<span>Y = 4 - 2 </span>
<span>Y = 2 </span>
<span>The solution is (X,Y) = (2,2) </span>
<span>This is quadrant I </span>
<span>Answer is A</span>
A perpendicular line is a line that directly intersects another line at such an angle that it makes a perfect cross, with all the angles measuring exactly 90°.
Hope that helped =)
