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3 years ago

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Mathematics

1 answer:

kipiarov [429]3 years ago

5 0

Answer:

Mean: 36.5

Standard Deviation: 1.44

Step-by-step explanation:

I got it right on Khan.

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There are 15 red, 14 green, and 9 yellow balls in a dark room. What is the minimum number of balls that Alicia needs to take so

Tems11 [23]

Answer:

Step-by-step explanation:

1. If you take 12 balls, 9 could be yellow and 3 could be red. We want at least 12 of the same color, so 30 balls isn't a good minimum

2. If you take 30 balls, 9 could be yellow, 10 could be red and 11 could be green. We want at least 12 of the same color, so 30 balls isn't a good minimum.

3. If you take 31 balls, 9 could be yellow, 11 could be red and 11 could be green. We want at least 12 of the same color, so 31 balls isn't a good minimum.

4. If you take 32 balls, 9 could be yellow, 11 could be red and 12 could be green or 9 could be yellow, 12 could be red and 11 could be green or 7 could be yellow, 13 could be red and 12 could be green or 9 could be yellow, 11 could be red and 12 could be green.

We want at least 12 of the same color, and we have it from the different samples of the 4th trial.

So, 32 balls is the minimum number of balls

8 0

3 years ago

Raj takes a taxi to the airport. He expects the taxi to travel at an average speed of 50 mph.

USPshnik [31]

An 1 hour and 30 mins or 90 minutes.

5 0

3 years ago

Read 2 more answers

Given the equation: y=mx+b m=slope true false

san4es73 [151]

Your answer is true.

$y=mx+b$

The equation is used to find the equation of a line in slope-intercept form.

m is used to represent the slope.

x is used to represent the x-axis.

y is used to represent the y-axis.

b is used to represent the y-intercept.

If you have any questions, feel free to ask! :)

3 0

3 years ago

Translation <-4,-4>

djverab [1.8K]

Answer:

Step-by-step explanation:

5,5

3 0

3 years ago

Triangle ABC is reflected across the y-axis to form the triangle A′B′C′, then dilated with a factor of 1∕3 to form triangle A″B″

Karo-lina-s [1.5K]

Given that:

- Triangle ABC is reflected across the y-axis to form the triangle A'B'C'.

- It was then dilated by the following scale factor in order to form triangle A"B"C":

$k=\frac{1}{3}$

You need to remember the following definitions in order to solve the exercise:

1. In Transformations, the original figure is called "Pre-Image" and the figure obtained after the transformation is called "Image".

2. When the transformation is a Reflection, the Image and the Pre-Image have the same size and shape.

3. In Dilations, the Image and the Pre-Image have the same shape but their sizes are different.

4. Two figures are similar when their corresponding angles are congruent and the ratios of the lengths of their corresponding sides are proportional.

5. Two figures are congruent when they have the same size and the same shape.

Then, you can conclude that:

• The triangles ABC and A'B'C' have the same shape and size. Therefore, they are congruent.

• The triangles ABC and A"B"C" have different sizes, therefore, they are not congruent.

• Knowing that the triangles ABC and A'B'C' are congruent, and knowing that A'B'C' has dilated to get the triangle A''B''C'', you can determine that the triangles ABC and A"B"C" are similar.

Hence, the answer is: Option A.

5 0

1 year ago