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miss Akunina [59]
3 years ago
11

In a class of students, the following data table summarizes how many students have a brother or a sister. What is the probabilit

y that a student chosen randomly from the class has a brother and a sister?

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer:

22/29

Step-by-step explanation:

Idk

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Could you please help me with number 6 thank you sm !!
ololo11 [35]

Answer:

  • A) a = 4, b = 3

Step-by-step explanation:

<h3>#6</h3>

<u>Given equation:</u>

  • 4/(x - 3) + 2/(x - 2) = 2

<u>Multiply all terms by (x - 3)(x - 2):</u>

  • 4(x - 2) + 2(x - 3) = 2(x - 3)(x - 2)
  • 2(x - 2) + (x - 3) = (x - 3)(x - 2)
  • 2x - 4 + x - 3 = x² - 5x + 6
  • x² - 5x - 3x + 6 + 7 = 0
  • x² - 8x + 13 = 0
  • x = (8 ± √(8² - 4*13))/2 = (8 ± √12)/2 = (8 ± 2√3)/2 = 4 ± √3

<u>Compare this to the given form to get:</u>

  • a = 4, b = 3

Correct choice is A

6 0
2 years ago
Margo’s dog, named Todd, weighed 120 pounds last year. She now weighs 180 pounds. What is the percent of change
elixir [45]

Answer:

50%

Step-by-step explanation:

the increase is 60 so divide that by the original number; 60/120=0.5

now we have to change the decimal to a percent. multiply by 100 to do that and we get 50%.

3 0
3 years ago
Read 2 more answers
An organization will give a prize to a local artist. The artist will be randomly chosen from among 10 painters, 3 sculptors, and
Fofino [41]

The probability is 8/18 or 44%.


Since there are 3 sculptors and 5 photographers, and the question is asking for either a sculptor or photographer, you add them together. There are a total of 18 artists, and the probability is the chance of a certain thing happening over the total amount of things that can happen (i.e. a coin landing on heads is 50%).

The answer would be 8/18.

7 0
3 years ago
Read 2 more answers
The dot plot below shows how many apple slices each girl at kaylas party ate which of the following represents the mean of the a
katovenus [111]
The answer to this question is 5.
8 0
4 years ago
Of the 16 people attending a seminar, 2 have blond hair.
pentagon [3]

Answer:

1/8

Step-by-step explanation:

3 0
3 years ago
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