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3 years ago

In an observational study, which of the following indicates the authors' conclusions and explains study limitations?

Mathematics

2 answers:

s2008m [1.1K]3 years ago

5 0

Just did this question, the correct answer is discussion.

hram777 [196]3 years ago

3 0

In an observational study, During the discussion, the author can indicates conclusion and explains the limitation of the study he did.
This is where the author can give the scope and limitations of his study and also to discuss what is the future use of his study. In introduction is where he can write the reason why he studied his research, in methodology is where he can write when , where and how he did his research and in result is where he can state what problem his research answered or what’s the edge of his research.

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Amy launched a ball into the air. The height of the ball can be represented by the equation h = -16t^2 + 96t + 112, where h is t

Sidana [21]

Answer:

Vertex is (3, 256)

Step-by-step explanation:

The vertex means that at 3 seconds, the highest point the ball will reach is 256 units in the air.

3 0

3 years ago

Which equation represents a line that is perpendicular to line PQ?

valentinak56 [21]

Answer:

B. y=1/3x+4

Step-by-step explanation:

Hi there!

We are given the line PQ and we want to find the line that is perpendicular to it

Perpendicular lines have slopes that are negative and reciprocal. When they are multiplied together, the result is -1

So first, let's find the slope of the line PQ

The point P is given as (-8, 7) and the point Q is given as (-4, -5)

The formula for the slope calculated from two points is $\frac{y_2-y_1}{x_2-x_1}$ where ( $x_{1}$ $y_1$ ) and ( $x_2$ , $y_2$ ) are points

We have the needed information for the slope, but let's label the values of the points to avoid any confusion

x1=-8

y1=7

x2=-4

y2=-5

Now substitute into the formula (m is the slope, and remember: the formula contains SUBTRACTION):

m= $\frac{(-5-7)}{(-4--8)}$

simplify

m= $\frac{-5-7}{-4+8}$

add

m=-12/4

divide

m=-3

So the slope of the line PQ is -3

As said above, perpendicular lines have slopes that have a product of -1

So to find the slope of the line perpendicular to PQ, use this formula:

-3m=-1

divide both sides by -3

m=1/3

The only line that has a slope of 1/3 is B (y=1/3x+4), so B is the answer.

Hope this helps!

3 0

3 years ago

Describe the general properties of rotations. Include a discussion of the properties of rigid transformations ,and line segments

OverLord2011 [107]

Answer:

A rotation is a rigid transformation, sometimes called an isometric transformation, that moves every point of the pre-image through an angle of rotation about the center of rotation to create an image. Rotations preserve size, rotations of 360 map a figure to itself, and lines connecting the center of rotation to the pre-image and the corresponding point on the image have equal length.

Step-by-step explanation:

Here man this is right

3 0

3 years ago

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The measure angle A is (2x+3), B (4x+2), C (2x-1). What are the measures of the angles?

Rudik [331]

Answer:

<A= 47, <B= 90, <C= 43

Step-by-step explanation:

2x +3 + 4x + 2 + 2x-1 = 180

8x + 4= 180

8x = 176

x =22

2x+3= 44+3= 47

4x+2 = 88+2 = 90

2x-1= 44-1 = 43

8 0

3 years ago

0 1 2 3 4 5. 6 I don’t know what I’m doing

IgorC [24]

Answer:

cool

Step-by-step explanation:

7 0

3 years ago

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