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Over [174]
3 years ago
13

Can someone show me how this works I don’t understand this Lesson

Mathematics
1 answer:
Dmitrij [34]3 years ago
3 0

Answer:

Step-by-step explanation:

Each dot represents a student, and the numbers along the bottom are "Baseball Games Attended".  There is 1 dot over the number 0.  That means that 1 student did not attend any games at all.  There are 2 dots over the number 1.  That means that 2 students attended 1 game.  

If you count the number of dots, you will get the total number of students in Mrs. Brown's class.  There 18 total students in her class.  Now let's answer the questions.

For a.  We want to compare the total number of students that attended 6 or more games to the number that attended 1 or less.

4 students attended 6 games, 2 students attended 7 games, and 3 students attended 8 games so 4 + 2 + 3 = 9 students attended 6 or more games.

2 students attended 1 game and 1 student attended 0 games so 2 + 1 = 3

A total of 6 more students attended 6 or more games than the number that attended 1 or less games.

For b.  We want the reduced ratio of the number of students that attended 4 games.  3 students attended 4 games.  There are 18 total students, so the fraction is 3/18 which reduces to 1/6.

For c.  We want kind of the same thing as we did for b, except we want the ratio of the total number of students, 18, to the number of students who attended 6 games, 4.  That ratio is 18/4 which reduces to 9/2.

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Which system of equations could be graphed to solve the equation below?
Andrej [43]

Answer:

y 1 = StartFraction log x Over log 0.5 EndFraction, y 2 = StartFraction log 2 Over log 3 EndFraction + x

Step-by-step explanation:

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3 years ago
What is the scale factor of triangle ABC to triangle DEF? A. 1/3 B. 1/2 C. 3 D. 2
Alenkasestr [34]

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Step-by-step explanation:

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4 0
3 years ago
. Anne is pushing a wheelbarrow filled with mulch to place in her garden. She is pushing the wheelbarrow with a force of 70 N at
Kruka [31]

<u>Answer:</u>

When Anne pushes the wheelbarrow 25 meters the work done is 1120 joules

<u>Solution:</u>

We know \text { Work }(\mathrm{W})=\text { Force }(\mathrm{F})\times\text { Distance (D) }

Anne is pushing the wheelbarrow with a force of 70 N at an angle of 50^{\circ} with the horizontal

So the force of Anne will be F=70 \cos 50^{\circ}=(70 \times 0.64)=44.8 \mathrm{N}

She pushes the wheelbarrow 25 meter, So D = 25 meters

So, the work,F\times D=(44.8 \times 25)=1120 \text { Joules }

Anne has done total 1120 joules work.

4 0
3 years ago
Below is a list of test scores for the ninth grade math and science classes at Campbell High School:
saveliy_v [14]

Answer:

C. The mean is the best measure of central tendency for the math class.

Step-by-step explanation:

4 0
4 years ago
) An instructor gives his class a set of 18 problems with the information that the next quiz will consist of a random selection
RSB [31]

Answer:

The probability the he or she will answer correctly is 1.5%

Step-by-step explanation:

In all, there are 18 problems. In this question, the order of which the problems are sorted for the quiz makes no difference. For example, if the question A of the quiz is P1 and question B P2, and question A P2 and question B P1, it is the same thing.

There are 18 problems and 9 are going to be selected. So, there is going to be a combination of 9 elements from a set of 18 elements.

A combination of n elements from a set of m objects has the following formula:

C_{(m,n)} = \frac{m!}{n!(m-n)!}

In this question, m = 18, n = 9. So the total number of possibilities is:

T_{p} = C_{(18,9)} = \frac{18!}{9!(18-9)!} = 48620

Now we have to calculate the number of desired outcomes. This number is a combination of 9 elements from a set of 13 elements(13 is the number of problems that the student has figured out how to do).

Now, m = 13, n = 9. The number of desired possibilities is:

D_{p} = C_{(13,9)} = \frac{13!}{9!(13-9)!} = 715

The probability is the number of desired possibilities divided by the number of total possibilities. So

P = \frac{715}{48620} = 0.015 = 1.5%

The probability the he or she will answer correctly is 1.5%

3 0
3 years ago
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