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3 years ago

2. The dot plots show how long it took students

Mathematics

1 answer:

LuckyWell [14K]3 years ago

6 0

Answer:

avg of 1st period is 38.75

avg of 2nd period is 35.0

Step-by-step explanation:

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Describe the transformation in the figure below

Keith_Richards [23]

Answer:

A) Reflection.

Step-by-step explanation:

From the figure shown, we can see that the blue triangle is flipped about the x-axis to form the red triangle.

When an object is flipped about a line, then this transformation is called reflection about that line.

Thus, we can say that reflection is taking place in the figure shown in which the x-axis is acting like a mirror. The blue triangle is the pre-image and the red triangle is the image after reflection.

The reflection about x-axis is given by:

$Pre-image(x,y)\rightarrow Image(x,-y)$

We can check the co-ordinates of the triangles and confirm the the transformation occurring

Points of pre-image triangle:

$(0,2),(4,5),(6,2)$

Points of image triangle

$(0,-2),(4,-5),(6,-2)$

Thus, the transformation is reflection.

3 0

4 years ago

Enter the correct answer in the box. Consider the graph of the sixth-degree polynomial function f. Replace the values b, c, and

AVprozaik [17]

Answer: (x - 1)(x + 1)^2(x - 4)^3

Step-by-step explanation:

First, remember that:

in expressions like: (x - b)^n

b is the value of x where the graph intersects the x-axis.

n can represent:

n = 1, the line just goes through the x-axis

n = 2, the line may change the direction (an inflection point), and touch the x-axis in one point.

n = 3, the line may have two inflection points when it intersects the x-axis.

Then we have the expression:

(x-b)(x-c)^2(x-d)^3

b is in the linear part, the graph crosses the x-axis linearly in x = 1.

c is in the quadratic part, the graph crosses the x-axis with one point of inflection at x = -1.

d is in the cubic part, the graph crosses the x-axis with two inflections in x = 4.

Then we can writhe the polynomial as:

f(x) = (x-1)(x-(-1))^2(x-4)^3 = (x - 1)(x + 1)^2(x - 4)^3

4 0

3 years ago

Math question 10 points

Dimas [21]

Answer: (a)

Step-by-step explanation:

the last step is

clear x

X=15.9/6.36

the answer is 5/2 or 2.50

5 0

2 years ago

The line represented by the equation 3x + 5y = 2 has a slope of negative StartFraction 3 Over 5 EndFraction.. Which shows the gr

dexar [7]

Answer:

:))))))))))

5 0

3 years ago

Rickie bought 6 tomatoes that each weight 1/4 of a pound Russ bought 14 tomatoes that weight 1/8 pound whose tomatoes weighed mo

Stells [14]

Russ had a total of 1 3/4 poundsRickie had a total of 1 1/2 (2/4) poundsTherefore, its Russ!

5 0

4 years ago

Read 2 more answers