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oksano4ka [1.4K]
2 years ago
11

Michael has 26 shirts to fold. Let N be the number of shirts he would have left to fold after folding F them. Write an equation

relating N to F . Then use this equation to find the number of shirts he would have left to fold after folding 23 of them.
Mathematics
1 answer:
Dennis_Churaev [7]2 years ago
5 0

Answer:

N = 3 F = 26

Step-by-step explanation:

If there's 26 in total and Michael has folded 3 of them N would be 3. F will be the total after folding 'N' amount left of the clothes!

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I have 10 goats, n of which are male. I need to choose 2 of them to make a casserole.
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Step-by-step explanation:

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The probability that in a random selection, the selected goat is a male, is equal to the quotient between the number of male goats (n) and the total number of goats (10)

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p = n/10

Now the total number of goats is 9, and the number of male goats is n -1

then the probability of selecting a male goat again is:

q = (n-1)/9

The joint probability (the probability that the two selected goats are male) is equal to the product of the individual probabilities, this is

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And we know that this probability is equal to 2/15

Then we have:

(n/10)*((n-1)/9) = 2/15

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n^2 - n - 12  = 0

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For an equation:

a*x^2  + b*x + c =  0

The two solutions are given by:

x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}

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n = \frac{1 +- \sqrt{(-1)^2 - 4*1*(-12)} }{2*1 } = \frac{1+- 7}{2}

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The other solution is:

n = (1 + 7)/2 = 4

This solution does make sense, this means that we have 4 male goats.

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