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pav-90 [236]
2 years ago
7

-2x^2+6x+7=2x-3 by quadratic formula

Mathematics
1 answer:
mash [69]2 years ago
8 0

Answer: There is no real solution because the discriminant is negative. Nevertheless, x is √6 + 1 or 1 - √6. However, these solutions are not real because the discriminant is negative.

Explanation: The square root of a negative number is not a real number.

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Answer:

173.26

Step-by-step explanation:

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write an equation in slope intercept form of the line that passes through the points. (-4, 2), (1, -1)
viva [34]

Answer:Y = 3\5x -2\5

Step-by-step explanation:

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Read 2 more answers
Find the probability of being dealt a full house. (Round your answer to six decimal places.)?
vesna_86 [32]

I'm assuming a 5-card hand being dealt from a standard 52-card deck, and that there are no wild cards.

A full house is made up of a 3-of-a-kind and a 2-pair, both of different values since a 5-of-a-kind is impossible without wild cards.

Suppose we fix both card values, say aces and 2s. We get a full house if we are dealt 2 aces and 3 2s, or 3 aces and 2 2s.

The number of ways of drawing 2 aces and 3 2s is

\dbinom42\dbinom43=24

and the number of ways of drawing 3 aces and 2 2s is the same,

\dbinom43\dbinom42=24

so that for any two card values involved, there are 2*24 = 48 ways of getting a full house.

Now, count how many ways there are of doing this for any two choices of card value. Of 13 possible values, we are picking 2, so the total number of ways of getting a full house for any 2 values is

2\dbinom{13}2\dbinom42\dbinom43=3744

The total number of hands that can be drawn is

\dbinom{52}5=2,598,960

Then the probability of getting a full house is

\dfrac{2\binom{13}2\binom42\binom43}{\binom{52}5}=\dfrac6{4165}\approx\boxed{0.001441}

4 0
3 years ago
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Pepsi [2]

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here m = - 5 and b = - 7, hence

y = - 5x - 7 ← equation of line

7 0
3 years ago
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Afina-wow [57]

Step-by-step explanation:

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True.  On the boxplot, we can see several outliers greater than the maximum.

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False.  According to the 5 number summary, 25% of the flights are between -55 and 13.  So less than 25% of the flights are on time or early.

"About 50% of flights are delayed between 13 and 35 minutes."

False.  According to the 5 number summary, 25% of the flight times are less than 13 minutes, and 50% of the flights are less than 35 minutes.  So 25% of the flights are delayed between 13 and 35 minutes, not 50%.

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True.  According to the 5 number summary, 75% of the flights are delayed less than 78 minutes.  Which means 25% of the flights are delayed more than 78 minutes.

4 0
3 years ago
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