2 years ago

-4(1-8n) - 4(8n+4)=x

Mathematics

1 answer:

Alex17521 [72]2 years ago

5 0

Answer:

x= -20

Step-by-step explanation:

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2 2/8 inches

Step-by-step explanation:

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2 years ago

Suppose a box of Cracker Jacks contains one of 5 toy prizes: a small rubber ball, a whistle, a Captain America decoder ring, a r

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Answer:

11.42 boxes

Step-by-step explanation:

For the first box bought, there is a 100% chance of getting a unique toy (since you still don't have any). E₁ = 1.

After that, there is a 4 in 5 chance of getting a unique toy from the next box, the expected number of boxes required is:

$E_2 = (\frac{4}{5})^{-1} = 1.25$

For the next unique toy, there is now a 3 in 5 chance of getting it:

$E_3 = (\frac{3}{5})^{-1} = 1.67$

Following that logic, there is a 2 in 5 chance of getting the 4th unique toy:

$E_4 = (\frac{2}{5})^{-1} = 2.5$

Finally, there is a 1 in 5 chance to get the last unique toy:

$E_5 = (\frac{1}{5})^{-1} = 5$

The expected number of boxes to obtain a full set is:

$E=E_1+E_2+E_3+E_4+E_5\\E=1+1.25+1.67+2.5+5\\E=11.42\ boxes$

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2 years ago

Find the missing coefficent. (5d - 7)(5d - 6) = 25d2 + d + 42

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25d^2-30d-35d+42=25d^2-65d+42.

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3 years ago

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1932 credit hours

Step-by-step explanation:

Create a proportion

credits credits

---------- = ----------

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14 ?

---- = -----

1 138

14 times 138

1932 credit hours

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2 years ago

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