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Andrej [43]
3 years ago
9

A fair coin is tossed four times. what is the probability that the sequence of tosses is hhtt?

Mathematics
1 answer:
Ugo [173]3 years ago
3 0
The probability of obtaining a head is 1/2.
The probability of obtaining a tail is 1/2.

The 4 tosses are independent events.
Therefore the probability of obtaining hhtt is
(1/2)⁴ = 1/16

Answer: 1/16

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The sum of two numbers is 43 . The smaller number is 19 less than the larger number. What are the numbers?
Setler [38]
Let the smaller number be x and the larger number be y.
We can calculate this by using simultaneous equation, aka listing 2 equations out.
From given,
X + y = 43
Let this be equation no. 1
X + 19 = y
Let this number be equation 2.
We can do simultaneous equations either by substitute method or elimination. In this case I'm using substitute.
We can already obtain the value of y (in terms of x) in euqation no. 2, so all we gonna do is to put y into equation 1.
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2 years ago
Evaluate the power: (−3)^4<br> A. 81<br> B. -81<br> C. 243<br> D. -331
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Answer:

The answer is 81.

Step-by-step explanation:

Since the power of 4 is even, the result will be positive.

{3}^{4}

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81

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7 0
2 years ago
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What’s the area and perimeter for this problem?
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Step-by-step explanation:

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IgorC [24]

Answer:

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Step-by-step explanation:

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So the height of the brick portion of the wall is 5.61 feet.

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