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dimulka [17.4K]
3 years ago
6

Students were selected at random in a local high school to see if there was an association between gender and

Mathematics
1 answer:
Assoli18 [71]3 years ago
5 0
<h3>Answer:  53%</h3>

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

Explanation:

The question asks "What percent of females participate in extracurricular activities?" This means we only focus on the second column. There are 36 women, and of this total, 19 are in extracurricular activities.

Dividing the two values leads to approximately 19/36 = 0.52777 which rounds to 0.53

Then we move the decimal to the right two spots to get 53%

Roughly 53% of the female students participate in extracurricular activities.

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On the eighth day the temperature dropped 8 degrees. If the total change in the temperature was -43 degrees, what integer repres
Mariulka [41]

Answer:

8

Step-by-step explanation:

7 0
3 years ago
A painter can paint a building in 15 days and a coworker can do the same job in 10 days. If the first painter starts and 3 days
Sonja [21]

Answer:  7.8 days

<u>Step-by-step explanation:</u>

Painter can get the job done in 15 days so gets \dfrac{1}{15} of the job done in 1 day.

Coworker can get the job done in 10 days so gets \dfrac{1}{10} of the job done in 1 day.

Together, they get \dfrac{1}{15}+\dfrac{1}{10} of the job done in 1 day.

Painter worked for 3 days so completed \dfrac{1}{15}(3)=\dfrac{1}{5} of the job.

That leaves a remaining of 1-\dfrac{1}{5}=\dfrac{4}{5} of the job to be completed.

Let x represent the number of days it will take them to work together.

Painter + Coworker = Together

\dfrac{1}{15}(x)\quad +\quad \dfrac{1}{10}(x)\quad =\quad \dfrac{4}{5}

Multiply by 30 to eliminate the denominator:

\dfrac{1}{15}(x)(30) +\ \dfrac{1}{10}(x)(30) = \dfrac{4}{5}(30)

Simplify and solve for x:

    2x + 3x = 24

            5x = 24

              x=\dfrac{24}{5}

              x = 4.8

Remember that Painter worked 3 days alone in addition to the 4.8 days they worked together.

So the total time to paint the building is 3 + 4.8 = 7.8

7 0
3 years ago
Computers from a particular company are found to last on average for 24 months without any hardware malfunction with a standard
vodomira [7]

Answer:

At least 68% of observations lie between 22 and 26 months.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 24

Standard deviation = 2

22 = 24 - 2

22 is one standard deviation below the mean

26 = 24 + 2

26 is one standard deviation above the mean.

So, by the empirical rule, at least 68% of observations lie between 22 and 26 months.

8 0
3 years ago
Which of the following values are in the range of the function graphed below? Check all that apply​
a_sh-v [17]

Answer:

B, C, D

Step-by-step explanation:

In this problem, the range is what the output, or y, can be. The origin, or the middie of the graph, is when x=0 and y=0. From the 10s on the screen, we can gather that 5 lines = a distance of 10 on the graph. Using this information, we can say

5 lines = distance of 10

divide both sides by 5 to find the distance for each line

1 line = distance of 2

The function goes from y=0 to three lines down, for a distance of 6. The range is therefore [-6,0] as all values from -6 to 0 on the y axis are included on the graph, including 0 and -6. In this range, -6, -2, and -1 are all included.

4 0
3 years ago
A fraction in which the GCF of the numerator and the denominator is 1 is written in .
Vlad [161]
I like milk on Tuesday and watching twerk videos. <span />
5 0
3 years ago
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