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2 years ago

HELPPPPPPPPPPPPPPPPPPPPPP

Mathematics

2 answers:

Helga [31]2 years ago

6 0

To solve this let us try to get x on it's own in the inequality.

-6<3x-12<=9
6<3x<=21
2<x<=7

Now a filled dot indicates <= or >= and empty indicates < or > so we know that the answer must have a filled dot on 7 and an empty dot on 2, with a line in between.

The answer is B, the selected one.

Kay [80]2 years ago

4 0

The answer to your problem would be answer B

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Given sin thata = 2/5 and 0° < thata < 90°. find sin 2 thata

Andrej [43]

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3 years ago

A music teacher asked 23 students in the band how many hours they practiced playing their instrument each week. The results are

valkas [14]

The question is incomplete! Complete question along with answer and step by step explanation is provided below.

Question:

A music teacher asked 23 students in the band how many hours they practiced playing their instrument each week. The results are shown in the dot plot. Which statement best describes the data?

a. The data are skewed left, so most student's practice times are more than the mean practice time.

b. The data are skewed left, so most student's practice times are less than the mean practice time.

c. The data are skewed right, so most student's practice times are less than the mean practice time.

d. The data are skewed right, so most student's practice times are more than the mean practice time.

Answer:

The correct option is a.

The data are skewed left, so most student's practice times are more than the mean practice time.

Step-by-step explanation:

Refer to the attached box plot which shows number of hours the students spent on practice for playing their instrument each week.

When the data distribution is not symmetric around the mean then it is either skewed to right or skewed to left.

The given box plot is skewed to the left since the tail of the distribution on the left side is longer than the right side or in other words, most of the data is leaning to the right side of the curve.

Due to this, most student's practice times are more than the mean practice time.

A left skewed distribution is also known as negatively skewed distribution.

Therefore, we can conclude that the correct option is a.

a. The data are skewed left, so most student's practice times are more than the mean practice time.

4 0

3 years ago