Answer:
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Step-by-step explanation:
and @wtfpeachess
Working Principle: Stratified Random Sampling
nx = (Nx/N)*n
where:
nx = sample size for stratum x
Nx = population size for stratum x
N = total population size
n = total sample size
Given:
Nx = 100
N = 1000
n = 0.5*(1000) = 500
Required: Probability of Man to be selected
Solution:
nx = (Nx/N)*n
nx = (100/1000)*500 = 50 men
ny = (Nx/N)*n
ny = (100/1000)*500 = 50 women
Probability of Man to be selected = nx/(nx + ny)*100 = 50/(50+50)*100 = 50%
<em>ANSWER: 50%</em>
Let's define our variables before anything else:
Kas = S
Jaspar = R
Jae = E
$400 is divided between Kas, Jaspar and Jae
This means S + R + E = 400
Kas has twice as much as Jaspar
This means that S = 2R
Jaspar has three times as much as Jae
This means that R = 3E
Because both of our smaller formulas have R, let's replace everything in the first formula with R
S + R + E = 400
plug in values
2R + R + R/3 = 400
multiply everything by 3 to get rid of the denominator
6R + 3R + R = 1200
add
10R = 1200
divide
R = 120
So Jaspar receives $120
Answer:
Step-by-step explanation:
4x+9y=-14
make x 0
9y=-14
y=-1.5(repeating)
to figure out x make y zero.
4x=-14
x=-3.5
hope this helped!
Answer:
The interest is 
Step-by-step explanation:
we know that
The simple interest formula is equal to
where
I is the Final Interest Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem we have
substitute in the formula above
