Infants-free
1 answer:
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Value of expression is
.
<u>Step-by-step explanation:</u>
Here we need to evaluate expression : (3xy/3x^2-12)*(x^2+3x+2/xy+y) or ,
Let's simplify this
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Factorizing the terms we get:
⇒ {
}
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Cancelling similar terms we get:
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Therefore , Value of expression is
.
269 armies have higher than 5600 goblin soldiers .
<u>Step-by-step explanation:</u>
Step 1: Sketch the curve.
The probability that X>5600 is equal to the blue area under the curve.
Step 2:
Since μ=5600 and σ=750 we have:
P ( X>5600 ) = P ( X−μ > 5600−5600 )=P ( X−μ/σ>5600−5600/750)
Since Z = x−μ/σ and 5600−5600/750=0 we have:
P ( X>5600 )=P ( Z>0 )
Step 3: Use the standard normal table to conclude that:
P (Z>0)=0.5
We have , 538 armies So , armies have higher than 5600 goblin soldiers is :
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Therefore , 269 armies have higher than 5600 goblin soldiers .