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abruzzese [7]
3 years ago
14

A fair coin is tossed 3 times. What

Mathematics
2 answers:
timofeeve [1]3 years ago
8 0

Answer:   \dfrac{2}{3}

<u>Step-by-step explanation:</u>

Given that there are exactly two heads out of three coins, we have the following possibilities:

H H T

H T H

T H H

Two of the three possible outcomes have two heads in a row.

\dfrac{\text{Number of "two heads in a row"}}{\text{Number of "exactly two heads"}}=\large\boxed{\dfrac{2}{3}}

Allisa [31]3 years ago
5 0

Answer:

The ratio of successful events A = 3 to total number of possible combinations of sample space S = 8 is the probability of 2 heads in 3 coin tosses.

Step-by-step explanation:

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4. The square root of 5 less than twice a number is 7. Find the number.
vladimir1956 [14]

Answer:

3.5

Step-by-step explanation:

we can divide that

  • the square root of 5
  • less than
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as you see the first one is really easy

\sqrt{5}

the second one is < because it points to the lower number

the third one we have

twice a number is 7

let's say x is the number

so twice x is 7

twice means 2 times

so 2 times x is 7

2*x=7\\\\\frac{1}{2}*2x=\frac{1}{2}*7\\\\x=3.5

so the number is 3.5

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3 years ago
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andrezito [222]
Always

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In this case the slant is y, with x and y as the height and base
y²=x^{2}+y^{2}

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If the length of a rectangle is 5 feet and a height of 3 feet what is the area of the rectangle
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Answer:

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Step-by-step explanation:

Area= Length x height

= 5x3

= 15feet squared

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Step-by-step explanation:

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