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3 years ago

If a coin is flipped four times, find the probability distribution for the number of heads. Listed below are four charts. Choose

Mathematics

1 answer:

aev [14]3 years ago

6 0

Answer:

The answer is C

Step-by-step explanation:

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Help please ! ill give brainliest if correct

Mashutka [201]

9514 1404 393

Answer:

a) (-5±√10)/3 ≈ {-2.721, -0.613}

b) (6±√21)/5 ≈ {0.283, 2.117}

Step-by-step explanation:

a) The relevant coefficients are ...

a = 3, b = 10, c = 5

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-10\pm\sqrt{10^2-4\cdot3\cdot5}}{2\cdot3}=\dfrac{-10\pm\sqrt{40}}{6}\\\\\boxed{x=\dfrac{-5\pm\sqrt{10}}{3}\approx\{-2.721, -0.613\}}$

b) The relevant coefficients are ...

a = 5, b = -12, c = 3

$x=\dfrac{-(-12)\pm\sqrt{(-12)^2-4\cdot5\cdot3}}{2\cdot5}=\dfrac{12\pm\sqrt{84}}{10}\\\\\boxed{x=\dfrac{6\pm\sqrt{21}}{5}\approx\{0.283, 2.117\}}$

7 0

3 years ago

A=4pi r squared solve for r squared

maxonik [38]

A=4pir^2
divide both sides by 4pi
$\frac{A}{4pi}=r^2$
$r^2= \frac{A}{4pi}$

8 0

3 years ago

Find two consquetive whose sum is 20 and whose difference is 14.

kirill [66]

Answer:

17 and 3

Step-by-step explanation:

the difference between 17 and 3 is 14

7 add 13 = 20

8 0

3 years ago

What is precipitation !!! Plsss answer todayyyy

posledela

C. any form of water that falls from the sky

7 0

2 years ago

Choose the correct classification of<br> 2x4 − 8x5 − 2x2 + 5.

Mandarinka [93]

I believe your answer is 5th degree polynomial.

6 0

3 years ago

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