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Rudik [331]
3 years ago
8

Solve the following x^2-2x-24=0 X^2-11+18=0

Mathematics
1 answer:
Marrrta [24]3 years ago
6 0

Answer:

x=-11

Step-by-step explanation:

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A box contains 5 red balls, 6 white balls and 9 black balls. Two balls are drawn at
valina [46]

Answer:

P(Same)=\frac{61}{190}

Step-by-step explanation:

Given

Red = 5

White = 6

Black = 9

Required

The probability of selecting 2 same colors when the first is not replaced

The total number of ball is:

Total = 5 + 6 + 9

Total = 20

This is calculated as:

P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)

So, we have:

P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1}  + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}

<em>Note that: 1 is subtracted because it is a probability without replacement</em>

P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1}  + \frac{9}{20} * \frac{9- 1}{20- 1}

P(Same)=\frac{5}{20} * \frac{4}{19} + \frac{6}{20} * \frac{5}{19}  + \frac{9}{20} * \frac{8}{19}

P(Same)=\frac{20}{380} + \frac{30}{380}  + \frac{72}{380}

P(Same)=\frac{20+30+72}{380}

P(Same)=\frac{122}{380}

P(Same)=\frac{61}{190}

4 0
2 years ago
Uh yes ok i need help rn.
Hatshy [7]

Answer:

y = 8.5x

Step-by-step explanation:

the amount of money (y)

amount per hour (8.5) times the hours (x)

8 0
2 years ago
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Answer:

"Starting today, I need to forget what's gone. Appreciate what still remains and look forward to what's coming next."

"Pain makes you stronger, fear makes you braver, heartbreak makes you wiser."

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"Inhale the future, exhale the past."

"Don’t cry because it’s over, smile because it happened."

7 0
3 years ago
One-fourth of r subtracted from ten is greater than five
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Im not 100% about how this question is explained or written but i think its 8
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What is the smallest and largest natural number​
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The smallest natural number is 1. The largest natural number does not exists because there will always be one even larger. But if you are asking the number of all natural numbers or the size of natural number set then \aleph_0 is your answer.

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