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2 years ago

9

Jody made 10 party invitations. yesterday she mailed 4 of them. what decimal represents the number of invitations that have been

mailed

1 answer:

valkas [14]2 years ago

7 0

0.4 invitations have been mailed because it's "out of ten."

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Each square below represents one whole. What percent is represented by the Shaded area?

drek231 [11]

Answer:

43%

Step-by-step explanation:

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3 years ago

Find the probability of getting four consecutive aces when four cards are drawn without replacement from a standard deck of 52 p

posledela

Answer:

<em>P=0.0000037</em>

<em>P=0.00037%</em>

Step-by-step explanation:

<u>Probability</u>

A standard deck of 52 playing cards has 4 aces.

The probability of getting one of those aces is

$\displaystyle \frac{4}{52}=\frac{1}{13}$

Now we got an ace, there are 3 more aces out of 51 cards.

The probability of getting one of those aces is

$\displaystyle \frac{3}{51}=\frac{1}{17}$

Now we have 2 aces out of 50 cards.

The probability of getting one of those aces is

$\displaystyle \frac{2}{50}=\frac{1}{25}$

Finally, the probability of getting the remaining ace out of the 49 cards is:

$\displaystyle \frac{1}{49}$

The probability of getting the four consecutive aces is the product of the above-calculated probabilities:

$\displaystyle P= \frac{1}{13}\cdot\frac{1}{17}\cdot\frac{1}{27}\cdot\frac{1}{49}$

$\displaystyle P= \frac{1}{270,725}$

P=0.0000037

P=0.00037%

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2 years ago

Whats a quadratic equation that has the roots of 6 and negative 9

Komok [63]

Answer:

x^2-3x-54

Step-by-step explanation:

(x+6)(x-9) Setup the roots

x^2-9x+6x-54 FOIL out the terms

x^2-3x-54 Add like terms together

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3 years ago

Find two additional roots of P(x)=0.<br><br> 13+sqrt 3 and 7i

vova2212 [387]

So, x = 13, x = √3 and x =7i.

now, recall that for an EVEN radical, there are two possible roots, namely is say √3 is say hmmm some value "a", that means that a*a = √3, however, -a*-a is also √3, therefore, ±√3 are two valid values, and therefore -√3 is another one.

now.... keep in mind that, complex solutions or roots, never come all by their lonesome, their sister is always with them, the conjugate, so, for 7i or namely 0 + 7i, her sister is always around, 0 - 7i, which is the other root.

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3 years ago

Please help, WILL MARK BRILLIANT! Is the relationship shown by the data linear? If so, model the data with an equation

Keith_Richards [23]

Hi...the answer is b.. I would recommend plot graph and find the gradient.... then use the point formula

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3 years ago