3 years ago

A fair coin is tossed 4 times. what is the probability that at least 2 heads appear

1 answer:

6 0

HHHH TTTT HHHT HHTH HTHH THHH TTTH TTHT THTT HTTT
HHTT HTHT HTTH TTHH THTH THHT

- is the sample space.

Total possible arrangements = 16.
Number with at least 2 heads = 11

Required probability = 11/16

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Which set of parametric equations represents the following function y=square root of x+3

Irina18 [472]

The given equation is:

$y= \sqrt{x+3}$

We have to find, which of the given set of parametric equations given in the options, result in the above equation:

The correct answer would be option A.

The equations in option A are:

$x(t) = 5t \\ 
y(t)= \sqrt{5t+3}$

From first equation we can see that 5t is equal to x. Using the value of 5th in second equation, we get the equation as:

$y= \sqrt{x+3}$

Therefore, the correct answer is option A

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3 years ago

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ludmilkaskok [199]

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$\boxed{35\°}$