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Mandarinka [93]
3 years ago
14

Please please please please please help me I really need this

Mathematics
1 answer:
valkas [14]3 years ago
3 0

Answer:

g(f(x)) = 10x^2 - 18

Step-by-step explanation:

g(f(x)) = 5(2x² - 5) + 7

g(f(x)) = 10x² - 25 + 7

g(f(x)) = 10x² - 18

(or g(f(x)) = 10x² + (-18), to fit your answer format)

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A rectangular yard has a total perimeter of 220 feet. The widths of the yard are each 30 feet shorter than the lengths of the ya
ziro4ka [17]

Answer:

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P = 220 ft

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I started guessing numbers for L that would work. When I did this, I made sure that all of the sides added up to 220 ft.

5 0
3 years ago
A fair coin is tossed repeatedly. What is the probability that three heads in a row will occur before a tail followed by two hea
Masteriza [31]

The probability that you can get N heads in a row would be:

Let <span>p</span> be the probability of flipping a heads. Let <span>x</span> be number of flips needed to achieve <span>h </span>consecutive heads. The solution is <span><span>E(x) = (<span><span>1−<span>p^h) / (</span></span><span><span>p^h</span>(1−p))</span></span></span></span>

This expression may be derived as follows. The probability of being successful immediately is <span><span>p^r.</span></span> However, one might get a tails immediately. In that case, the number of flips needed is <span><span>1+E(x) </span></span>(one flip has been used and we are back to the original position). We might get a heads and then a tails. In this case two flips have been used and we are back to the original position. Continue this up to <span><span>h−1</span></span> heads followed by a tails in which case <span>h</span> flips have been used and we are back to the original position.

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3 years ago
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Evgesh-ka [11]
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3241004551 [841]
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