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3 years ago

When evaluating an observational study, the four factors that should be reviewed are

Mathematics

1 answer:

Zinaida [17]3 years ago

7 0

They are
1. Background
2. Methods
3. Results
4. Conclusions
Hope this helped

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12a^2*b^4-36a^2*b+44abc

spayn [35]

Let's simplify step-by-step.

$12a^2*b^4-36a^2*b+44abc=$

There are no like terms.

Answer:

$12a^2*b^4-36a^2*b+44abc=$

5 0

2 years ago

The midpoint of AB is (3,2). If point is is located at(8,4) what are the coordinates of point B

Dmitry [639]

Step-by-step explanation:

8-3 = 5,

3-5 = -2 = the x coordinate of B

-2-4 =-6,

-2-6 =-8 = the y coordinate of B

(-2,-8) is the point B

A is 5 to the right of the midpoint, so B is 5 to the left of the midpoint

A is 6 up from the midpoint so B is 6 down from the midpoint

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2 years ago

Find the area of following rhombuses. Round your answers to the nearest tenth if<br> necessary.

polet [3.4K]

Answer:

$Area =55.4ft^2$

Step-by-step explanation:

Given

The attached rhombus

Required

The area

First, calculate the length of half the vertical diagonal (x).

Length x is represented as the adjacent to 60 degrees

So, we have:

$\tan(60) = \frac{4\sqrt 3}{x}$

Solve for x

$x = \frac{4\sqrt 3}{\tan(60)}$

$\tan(60) = \sqrt 3$

So:

$x = \frac{4\sqrt 3}{\sqrt 3}$

$x = 4$

At this point, we have established that the rhombus is made up 4 triangles of the following dimensions

$Base = 4\sqrt 3$

$Height = 4$

So, the area of the rhombus is 4 times the area of 1 triangle

$Area = 4 * \frac{1}{2} * Base * Height$

$Area = 4 * \frac{1}{2} * 4\sqrt 3 * 4$

$Area =2 * 4\sqrt 3 * 4$

$Area =55.4ft^2$

7 0

3 years ago

PLZ HELP I WILL MARK BRAINLEST, THANKS!

Andru [333]

Answer:

3, and b

Step-by-step explanation:

1. x =3

Because you have 3 little squares for one x

2. x= -12

b) 15+6=21

3 0

2 years ago

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Help again pls im stuck andim timed

guapka [62]

Answer:

-7 degrees

Step-by-step explanation:

Make sure to double check, but I think this is the answer.

6 0

3 years ago

Read 2 more answers