How many solutions does the equation −6a + 6a + 5 = 8 have? One Two No solution Infinite solutions

Mathematics

1 answer:

umka21 [38]2 years ago

5 0

−6a + 6a + 5 = 8
5 = 8 False

So, No solution.

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The wildlife department has been feeding a special food to rainbow trout fingerlings in a pond. based on a large number of obser

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The normal distribution curve for the problem is shown below

We need to standardise the value X=405.5 by using the formula

$z-score= \frac{X-Mean}{Standard Deviation}$
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We now need to find the probability of z=0.32 by reading the z-table

Note that z-table would give the reading to the left of z-score, so if your aim is to work out the area to the right of a z-score, then you'd need to do:

$P(Z\ \textgreater \ z)=1 - P(Z\ \textless \ z)$

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hence,
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The probability that the mean weight for a sample of 40 trout exceeds 405.5 gram is 0.3475 = 34.75%