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3 years ago

Rewrite each mixed number as a sum of two signed numbers 3 1/5 -7 3/8

Mathematics

2 answers:

VARVARA [1.3K]3 years ago

7 0

Answer:

1/2

Step-by-step explanation:

ICE Princess25 [194]3 years ago

3 0

Answer: $=-4\frac{7}{40}$

Step-by-step explanation:

$3\frac{1}{5}+\left(-7\frac{3}{8}\right)$

$=\frac{16}{5}+\left(-\frac{59}{8}\right)$

$\frac{16}{5}+\left(-\frac{59}{8}\right)=\frac{16}{5}-\frac{59}{8}$

$=\frac{128}{40}-\frac{295}{40}$

$=\frac{128-295}{40}$

$=\frac{-167}{40}$

$=-4\frac{7}{40}$

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Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

In a lottery game a player wins $1,000,000 with probability 0.0000005, wins $200,000 with probability0.000002, and wins $30,000

MariettaO [177]

Answer:

$X_1 = 1000000 , P(X_1)= 0.0000005$

$X_2 = 200000 , P(X_2)= 0.000002$

$X_3 = 30000 , P(X_3)= 0.00001$

$X_4 = -2, P(X_4) = 1-0.0000005-0.000002-0.00001= 0.9999875$

And then replacing we have this for the expected value:

$E(X) = 1000000*0.0000005 +200000*0.000002+30000*0.00001 2*0.9999875$

And after do the math we got:

$E(X) = -0.79998$

And then the expected value for this game is -0.79998 a negative result means NOT a win.

Step-by-step explanation:

For this case we can define the random variable X as the amount that we can win. We can find the expected value with the following formula:

$E(X) = \sum_{i=1}^n X_i P(X_i)$

And we have the following probabilities and possible values given:

$X_1 = 1000000 , P(X_1)= 0.0000005$

$X_2 = 200000 , P(X_2)= 0.000002$

$X_3 = 30000 , P(X_3)= 0.00001$

$X_4 = -2, P(X_4) = 1-0.0000005-0.000002-0.00001= 0.9999875$

And then replacing we have this for the expected value:

$E(X) = 1000000*0.0000005 +200000*0.000002+30000*0.00001 2*0.9999875$

And after do the math we got:

$E(X) = -0.79998$

And then the expected value for this game is -0.79998 a negative result means NOT a win.

7 0

3 years ago

PLEASE HELP MEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!

Nana76 [90]

Answer:

100,000

Step-by-step explanation:

100,000 x 2 is 200,000

8 0

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andre [41]

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4 years ago

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