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max2010maxim [7]
3 years ago
8

X^2-2x-15=0 x^2-7x=18 4n^2=4n+36=0

Mathematics
1 answer:
Blizzard [7]3 years ago
8 0

Answer: oh  this is hard

Step-by-step explanation: its b

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A decreased by 20% and then increased by 20% express using algebra<br> asapppppp
Ket [755]

Answer:

96%

Step-by-step explanation:

assume the whole number is x

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x - 20%x = 80% x

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Anne takes a rectangular piece of fabric and cuts from one corner to the opposite corner. If the piece of fabric is 15 inches lo
Alekssandra [29.7K]

\sqrt{5^2+18^2}=

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3 years ago
What is the probability of selection for any man in a proportionate random sample, where a sample of 100 will be drawn from a po
kolbaska11 [484]
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 
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Given:

  Nx = 100
  N = 1000
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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


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<em>ANSWER: 50%</em>
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Answer:

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