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3 years ago

Please help i will mark brainly!!

Mathematics

2 answers:

steposvetlana [31]3 years ago

6 0

The answer is that it is positive

pychu [463]3 years ago

6 0

2,535 - (-583) would be a positive number because the subtraction sign distributes to the negative number, turning it into a positive number.

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Which lengths can be used, directly or indirectly, to calculate the volume of the hexagonal right pyramid? check all that apply.

diamong [38]

Answer

A. XY and ST

B. VU and TW

D.TX and WX

Step-by-step explanation:

The question is on volume of a hexagonal right pyramid

The formula for volume of hexagonal right pyramid is

$V=\frac{\sqrt{3} }{2}a^2h$

where a is the base length and h is the height of the pyramid.

So to get the volume, you need to find the base area then multiply it by the height.

Let observe the lengths that can help you in calculating the volume.

Length XY is important because it is a base length

Length st is important because it is the height of the pyramid

Length VU/YZ is important because it is a base length

Length TW/TX is important because it could help you determine the slant height and if the apothem length is given, you can determine the height TS

Length XW is important because it is a base length

Length XS is not important because it is not the apothem length.Apothem length is a perpendicular bisector of the base length originating from the center of the pyramid

Therefore the correct pairs of lengths are ;

A. XY and ST

B. VU and TW

D.TX and WX

3 0

3 years ago

Express cos6mcos2m as a sum or difference

raketka [301]

Given :

An expression (cos 6m)(cos 2m) .

To Find :

We need to express it in terms as sum or difference.

Solution :

We know,

cos( A + B ) = cosA cos B - sin A sin B

cos( A - B ) = cosA cos B + sin A sin B

Adding both the equations we get :

2cos A cos B = cos( A + B) + cos( A - B )

cos A cos B = cos( A + B) + cos( A - B )/2

Putting value of A = 6m and B = 2m in above equation, we get :

(cos 6m)(cos 2m) = cos( 6m + 2m ) + cos( 6m - 2m )/2

(cos 6m)(cos 2m) = cos(8m) + cos(4m)/2

Hence, this is the required solution.

4 0

3 years ago

Can someone please tell me what the key characteristics of two dimensional figures

Ad libitum [116K]

They are length and width. the only thing is that they do not have volume

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Ganezh [65]

6- neither of the treatments helped dispel the green lime.
7-control group- water
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3 years ago

What is the place value of 3 in 5.349

Lisa [10]

The place value is 300.

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3 years ago

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