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Scorpion4ik [409]
3 years ago
6

Calculate the MADs for the teachers' scores. Did the teachers make progress in standardizing the scores?

Mathematics
1 answer:
lawyer [7]3 years ago
7 0
The teacher made progress in standardizing the test scores from the beginning of the year to the end. The MAD tells us this because the difference in the teachers scores from the mean is less at the end.  The Mean Absolute Deviation is a measure of variability, and the smaller the number, the less variability there is in the answers.  So, in this example there are more scores closer to the average than when they first graded the essays.
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Lupe has 14 stickers that she wants to give to 2 friends.
Olegator [25]
A. You would divide it between the two
4 0
2 years ago
What is the product in simplest form state any restrictions on the variable x^2+9x+18/x+ times x^2-3x-10/x^2+2x-24?
Ostrovityanka [42]

Answer:

<u>X^4+26X^3-24X^2-100 / X^2</u>

<u>(its a fraction btw)</u>

Step-by-step explanation:

ITS THE EQUATION SIMPLIFIED :)

x2+9x+ 18 x x2−3x− 10 x2 +2x−24

= x5+26x4−24x3−10x  x3

↓↓↓↓looks like this kinda ↓↓↓↓

x^4+26x^3−24x^2−10

---------------------------------

            x^2

6 0
2 years ago
Read 2 more answers
ASAP! GIVING BRAINLIEST! Please read the question THEN answer CORRECTLY! NO guessing. Show your work OR give an explaination.
erma4kov [3.2K]

Answer:

y =  x² - 8x + 17

Step-by-step explanation:

Recall this formula:

y = a(x-h)² + k

Original equation was y = x², which in this form looks like

y = 1(x - 0)² + 0

If the shape of the graph didn't change, that means that a (the compressor/intensifier) stayed the same (a - value) meaning we can write the equation as..

y = (x-h)² + k

Remember, (h, k) is the vertex, which looking from your graph is at (4, 1)

y = (x - 4)² + 1

y = x^2- 8x + 16+1

y = x² - 8x + 17

8 0
3 years ago
A map
Bess [88]

The scale of the map from inches to miles is 1 inch : 9 miles

<h3>How to determine the scale of the map from inches to miles?</h3>

The given parameters are:

  • The actual distance of the cities apart = 36 miles
  • The scale distance of the cities apart = 4 inches

The scale of the map from inches to miles is represented as:

Scale of map = The scale distance of the cities apart : The scale distance of the cities apart

Substitute the known values in the above equation

Scale of map = 4 inches : 36 miles

Divide both sides of the ratio by 4

So, we have:

Scale of map = 4/4 inches : 36/4 miles

Evaluate the quotient

Scale of map = 4/4 inches : 9 miles

Evaluate the quotient

Scale of map = 1 inch : 9 miles

Hence, the scale of the map from inches to miles is 1 inch : 9 miles

Read more about scale drawing at:

brainly.com/question/15891755

#SPJ1

6 0
1 year ago
Complete the equation of the line through<br> (-6, -5) and (-4,-4).<br> Use exact numbers.
Nutka1998 [239]

Answer:

y = \frac{1}{2} x - 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 6, - 5) and (x₂, y₂ ) = (- 4, - 4)

m = \frac{-4+5}{-4+6} = \frac{1}{2}, thus

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 6, - 5), then

- 5 = - 3 + c ⇒ c = - 5 + 3 = - 2

y = \frac{1}{2} x - 2 ← equation of line

7 0
2 years ago
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