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:
Heyy kings/queens your answer is C
Answer:
56 music files
Step-by-step explanation:
From the above question:
Let the number of music files
Arely has = x
Valerie has = y
Arely has 4 fewer than twice as many music files as Valerie.
x = 2y - 4
They have a combined number of 86 music files.
x + y = 86
We substitute 2y - 4 for x in the above equation
2y - 4 + y = 86
3y - 4 = 86
3y = 86 + 4
3y = 90
Divide both sides by 3
3y/3 = 90/3
y = 30
Hence, Valerie has 30 music files.
The number of music files that Arely has is calculated as:
x = 2y - 4
x = 2(30) - 4
x = 60 - 4
x = 56
Arely has 56 music files
Answer:
(3x-6)/x^2+5x-14
Step-by-step explanation:
No matter who long or complicated the denominators are, if they are the same, it is OK to just add the numerators together and keep the denominator the same.
When the sides are dilated by a factor of 6, the area increases by a factor of 6², which is 36.
3*36=108 mm²
