2 years ago

4 times the square of one number minus 5 times another number

Mathematics

1 answer:

iVinArrow [24]2 years ago

6 0

Answer:

4x^2-5y

Step-by-step explanation:

4x^2-5y

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Answer:

Follows are the solution to the given point:

Step-by-step explanation:

For option A:

In the first point let z be the number of heads which is available on the first two trails of tosses so, the equation is:

$P(X=k | z=2 ) = \begin{pmatrix} 10-2\\ k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k}$

$= \begin{pmatrix} 8\\k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k} \ \ \ \ \ \ \ \ \ \ \\\\$

$k= 2,3..........10$ For option B:

$P(X=k | X \geq 2 ) = \sum^{10}_{i=2} \begin{pmatrix} 10-i\\ k-i\end{pmatrix} (\frac{1}{2})^{k-i} (\frac{1}{2})^{10-k}$

$k= 2,3, 4.........10$

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A triangle has sides with lengths of 7 yards, 12 yards, and 13 yards. Is it a right triangle?

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Answer:

Step-by-step explanation:

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timofeeve [1]

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During a sale, a dress is marked down from a selling price of $90 to a sale price $72 what is the percent markup

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Determine if true:<br> 1y+8y+10y=20y

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Answer:

False

Step-by-step explanation:

1+8=9

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4 times the square of one number minus 5 times another number​

4 times the square of one number minus 5 times another number