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Aliun [14]
2 years ago
13

Lila is making a spinner game for her cousins to play she has divided it into 8 equal sections

Mathematics
1 answer:
eimsori [14]2 years ago
7 0

Using the probability concept, it is found that:

  • a) P(star) = 3/8 = 0.375 = 37.5%.
  • b) P(not diamond) = 7/8 = 0.875 = 87.5%.
  • c) P(flower) = 1/4 = 0.25 = 25%.
  • d) You would expect to spin a heart 25 times.

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

  • A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

Item a:

  • Of the 8 sections, 3 are stars.
  • \frac{3}{8} = 0.375

Then:

P(star) = 3/8 = 0.375 = 37.5%.

Item b:

  • Of the 8 sections, 7 are not diamonds.
  • \frac{7}{8} = 0.875

Then:

P(not diamond) = 7/8 = 0.875 = 87.5%.

Item c:

  • Of the 8 sections, 2 are flowers.
  • \frac{2}{8} = \frac{1}{4} = 0.25

Then:

P(flower) = 1/4 = 0.25 = 25%.

Item d:

  • 2 out of the 8 sections are hearts, then:

p = \frac{2}{8} = \frac{1}{4}

Out of 100:

\frac{1}{4} \times 100 = \frac{100}{4} = 25

You would expect to spin a heart 25 times.

A similar problem is given at brainly.com/question/16256175

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3 years ago
The mean length of 7 planks of wood is 1.35m. When an extra plank of wood is added, the mean length of a plank of wood increase
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Answer: Hello There!................

Mean = Sum of observation / total number of observation

Mean = 1.35m

1.35  = Sum of length of 7 wood planks/ 7

1.35*7 = Sum of the length of 7 wood planks

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Let the length of extra added wood plank = x

So,

(Sum of the length of 7 wood planks + x) / 8 = 1.4m

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Step-by-step explanation:

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3 years ago
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nydimaria [60]

Answer:

The answer to your question is 24x³ - 46x²- 28x + 63

Step-by-step explanation:

Data

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Process

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2.- Multiply -7 by the three terms of the first polynomial

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3.- Add both result

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