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____ [38]
2 years ago
13

Students in 7th grade took a standardized math test that they also had taken in 5th grade. The results are shown on the dot plot

, with the most recent data shown first. Find and compare the means to the nearest tenth. 7th-grade mean: 5th-grade mean: What is the relationship between the means?.
Mathematics
2 answers:
Finger [1]2 years ago
7 0

Answer: In general, the students increased their standardized math scores from 5th grade to 7th grade. The students might be more familiar with the exam and they have learned more in their math classes.

tensa zangetsu [6.8K]2 years ago
6 0

Answer:

7th grade mean: 16

5Th grade mean: 13.4

3. The 7th grade mean is about 2.5 points higher

Step-by-step explanation:

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Sibal started with $500 in a bank account that does not earn interest. In the middle of every month, she withdraws 15 of the acc
Otrada [13]
After every month's withdrawals, 4/5 of the original amount at the start of the month will remain. The amount at the start of every month will change. Thus:
an = 4/5 (an-1) ; where a1 = 500.
4 0
3 years ago
PLEASE HELP ME!!!!!!!!!
Makovka662 [10]

Answer:

  (a)  (5, -3)

Step-by-step explanation:

The "substitution method" for solving a system of equations requires that you write an expression that can be substituted for a variable in one or more of the other equations in the system.

<h3>Expression to substitute</h3>

The given equations are ...

  • y = x -8
  • 2x +3y = 1

We notice the first equation gives an expression for y. This is exactly what we want to substitute for y in the second equation.

<h3>Substitution</h3>

When the expression (x-8) is substituted for y in the second equation, you get ...

  2x +3(x -8) = 1

This simplifies to ...

  5x -24 = 1

<h3>Solution</h3>

This 2-step equation can now be solved in the usual way:

  5x = 25 . . . . . . add 24 to isolate the variable term

  x = 25/5 = 5 . . . . . divide by the coefficient of x

Note that we now know what the correct answer choice is.

Using the expression for y, we find ...

  y = x -8 = 5 -8 = -3

The solution is (x, y) = (5, -3).

__

The attached graph confirms this solution.

6 0
1 year ago
Use a fraction to estimate 49% of 96
Scilla [17]
47.04 in decimal form.
3 0
3 years ago
Read 2 more answers
How are the graphs of y = sin(x) and y = sin(x - 8) related? *
kvasek [131]

Answer:

There is a horizontal shift.

Step-by-step explanation:

Replacing  x  in a function formula with  x - 8  moves the graph 8 units to the <u>right</u>.

In the attached image, y = sin(x) is light green,  y = sin(x - 8) is dark green, and the arrows show how points on sin(x) get moved 8 units to the right.

5 0
3 years ago
A child pushes a toy car with a force of
ehidna [41]

The work is done on the toy car is 164.4 J .

<h3>How to calculate work done?</h3>

We are aware that the definition of work is the multiplication of the magnitude of the displacement (d) and the component of the force acting in the displacement direction.

When an object moves over a distance while being applied with force, the work is considered to have been completed.

Three categories can be used to classify the type of labor performed. Positive work, negative work, and zero work are the three types. The angle between force and displacement determines the kind of work that is done. Positive work is defined as any work that causes an object to move in the direction of the applied force.

Given ,

Work = force * distance

Force = 5.2 N

Distance = 32 m

So ,

Work = 5.2 * 32

= 166. 4 J

Therefore the work is done is 164.4 J

To learn more about work done refer to:

brainly.com/question/25816840

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6 0
1 year ago
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