3 years ago

The probability of obtaining nine heads in a row when flipping a coin is

1 answer:

7 0

Answer: The probability is about 0.2%.

The probability of flipping heads one time is 0.5, 50% or 1/2.

To flip heads 9 times in a row, we have to multiply 1/2 by itself 9 times.

(1/2)^9 = 1/512 or about 0.2%

It should only happen once every 512 times.

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Okay I told me it was two plus two please

nignag [31]

two plus two is four

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3 years ago

(Squreroot x+2)(squreoot x-2)=0

yuradex [85]

Answer:

$\boxed{ \ x = 2 \ or \ x = -2 \ }$

Step-by-step explanation:

I understand that you want to solve this equation

$\sqrt{x+2}\sqrt{x-2}=0$

<=>

$\sqrt{(x+2)(x-2)}=0$

<=>

$(x+2)(x-2)=0$

<=>

x = 2 or x = -2

hope this helps

if your question is $(\sqrt{x}+2)(\sqrt{x}-2) = 0$

then this is $(\sqrt{x})^2-4 = 0\\ x = 4$

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3 years ago

The diagram is a hat box that is designed with the shape of a regular octagon inside and a rectangle outside. Find the value of

nekit [7.7K]

In a regular octagon all the interior angles are of the same value.
sum of the interior angles in octagon = (n-2) *180°
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since there are 8 equal angles = 1080/8 = 135°
Angle x + one interior angle of the octagon = 180 ° (as its a straight line)
x + 135 = 180
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5 0

3 years ago

If p is directly proportional to q, and p = 40 when q = 15, find q when p = 64

Zinaida [17]

40/15=64/q
The answer is q=24

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3 years ago

The test grades of 10 different students were used to create the box plot above. Which of the following is the median of the set

lakkis [162]

Answer:

the answer is 71

Step-by-step explanation: