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Alborosie
2 years ago
15

When calculating probability what value is does the numerator represent and what value does the

Mathematics
1 answer:
andrew-mc [135]2 years ago
4 0

Answer:

Numerator represents number of ways achieving success.

Denominator represents total number of outcomes.

Step-by-step explanation:

P = \frac{number of succes events}{number of total events}

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Which expression is equivalent to ( x<br> 27<br> ვ<br> ?<br> o x*(V)<br> o x?? (2)<br> *24 (/
Vikki [24]

Answer:

27

Step-by-step explanation:

3*3*3=27. 3*3=9 9*3=27

7 0
2 years ago
Which is the result when the equation y = -2/5x + 5/2 is converted to<br> standard form?
mixer [17]

Answer:

 4x+10y-25=0

Step-by-step explanation:

y=-\frac{2}{5} x+\frac{5}{2}

Multiply by 10 on both sides,

10y=-4x+25\\

so 4x+10y-25=0

4 0
2 years ago
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At Hogwarts School of Witchcraft and Wizardry, Professor Snape was concerned about grade inflation, and suggested that the schoo
ExtremeBDS [4]

Answers:

The z scores are approximately:

  • Care of Magical Creatures:  z = 0.333
  • Defense Against the Dark Arts:  z = 0.583
  • Transfiguration:  z = -0.263
  • Potions: z = -0.533

From those scores, we can say:

  • Best grade = Defense Against the Dark Arts
  • Worst grade = Potions

=====================================================

Further Explanation:

We'll need to convert each given score to a corresponding standardized z score.

The formula to use is

z = (x - mu)/sigma

where,

  • x = given grade for each class
  • mu = mean
  • sigma = standard deviation

Let's find the z score for the Care of Magical Creatures class

z = (x - mu)/sigma

z = (3.80 - 3.75)/(0.15)

z = 0.333 approximately

Repeat this process for the Defense Against the Dark Arts score.

z = (x - mu)/sigma

z = (3.60 - 3.25)/(0.60)

z = 0.583 approximately

And for the Transfiguration class as well

z = (x - mu)/sigma

z = (3.10 - 3.20)/(0.38)

z = -0.263 approximately

The negative z score means his grade below the average, whereas earlier the other scores were above the average since he got positive z scores.

Now do the final class (Potions) to get this z score

z = (x - mu)/sigma

z = (2.50 - 2.90)/(0.75)

z = -0.533 approximately

This grade is below average as well.

----------------------------

To summarize, we have these z scores

  • Care of Magical Creatures:  z = 0.333
  • Defense Against the Dark Arts:  z = 0.583
  • Transfiguration:  z = -0.263
  • Potions: z = -0.533

Harry did his best in Defense Against the Dark Arts because the z score of 0.583 (approximate) is the largest of the four z scores. On the other hand, his worst grade is in Potions because -0.533 is the lowest z score.

3 0
1 year ago
SOLVE<br> r(s 2) (t) when r = 2, s = 3, and t = 5 <br><br><br> pls help
Keith_Richards [23]

Answer:

320 or 40 sorry if I´m wrong

Step-by-step explanation:

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2 years ago
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Blocks numbered 0 through 9 are placed in a box, and a block is randomly picked.
aliya0001 [1]
<span>Blocks numbered 0 through 9 are placed in a box, and a block is randomly picked.=3/10

</span><span>The probability of picking an odd prime number is . The probability of picking a number greater than 0 that is also a perfect square is=3/10</span>
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3 years ago
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