Answer:

Step-by-step explanation:
Given
Sample Size = 2500
Percentage = 30%
Required
Calculate Mean of Y
Mean or Expected Value is calculated as thus;

Where E(Y) represents the mean
n represents the sample size (or population)
p represents the success probability
%

So,


Hence, the mean value of Y is 750
Answer:
There is no solution.
Rewrite -2x + y = -6 so it starts with y =...
y = 2x - 6
Substitute that in 2/3x - 1/3y = -2 gives:
2/3x - 1/3*(2x -6) = -2
2/3x - 2/3x + 2 = -2
0 + 2 = -2
This statement is not true, and that means there is no solution.
Answer:
Step-by-step explanation:
πr² = 18
v = 90 cm³
1/3πr² h = 90
1/3*18*h = 90
h = 90*3/18
h = 5*3 =15 cm
Answer:
true
Step-by-step explanation:
let the vertex of the triangle be A(x1, y1), B(x2, y2), C(x3, y3) .
the centroid of the triangle will be (
,
).
cordinate of mid point of AB (
)