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3 years ago

Would 20, 40, 30 form a right angle

Mathematics

2 answers:

Kazeer [188]3 years ago

7 0

Answer:

Step-by-step explanation:

It would not form a right triangle because if you square 20, 30, 40, and add 20^2 and 30^2 it would become 1,300, but 40^2 is 1,600 which does not make it a right triangle according to the Pythagorean Theorem.

Mashutka [201]3 years ago

3 0

Yes because if you add forty and thirty that equals seventy plus twenty is 90 which is a right angle

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Find the perimeter od a rectangular frame with sides of 4x -1 and 6x+5

Keith_Richards [23]

Answer:

20x+8

Step-by-step explanation:

in a rectangle, the sides opposite from each other are equal, and finding the perimeter means you going to add all the sides together

therefore we have

4x-1+4x-1+6x+5+6x+5=20x+8

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3 years ago

3. Repeat this process to find the width and height of a newer 48-inch television whose

AlekseyPX

Answer:

Step-by-step explanation:

Please see attached a sketch of the television

the size of a television is described by the length of its diagonal in inches.

in this case, the diagonal of the television is 48"

we are told that the aspect ratio is 16:9

hence the dimension of the television as seen from the draft is

length= 16x

height=9x

Applying Pythagoras theorem

(16x)^2+(9x)^2= 48^2

256x^2+81x^2=2304

337x^2=2304

divide both sides by 337 we have

x^2=2304/337

x^2=6.8367

x=√6.8367

x=2.6

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H=9x

=9(2.6)

=23.5"

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3 years ago

What are all of the powers of 3 in the range 3 through 1000

Mkey [24]

The first one is 3 . To find each of the others, multiply the previous one by 3 .

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4 years ago

Which function describes the arithmetic sequence shown?

Assoli18 [71]

Answer:

The function $a_n=2n-3$ describes the arithmetic sequence.

Step-by-step explanation:

Given the sequence

-1, 1, 3, 5, 7, 9, 11, 13

An arithmetic sequence has a constant difference 'd' is defined by

$a_n=a_1+\left(n-1\right)d$

Compute the differences between all the adjacent terms:

$1-\left(-1\right)=2,\:\quad \:3-1=2,\:\quad \:5-3=2,\:\quad \:7-5=2,\:\quad \:9-7=2,\:\quad \:11-9=2,\:\quad \:13-11=2$

As the difference between all of the adjacent terms is the same and equal to

$d=2$

As the first element is

$a_1=-1$

so the term will be:

$a_n=a_1+\left(n-1\right)d$

$a_n=2\left(n-1\right)-1$

$a_n=2n-3$

So, the function $a_n=2n-3$ describes the arithmetic sequence.

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3 years ago

Find the area of a circle with radius equal to 4.

shtirl [24]

<h2>the radius of circle is 4cm</h2>

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3 years ago

Would 20, 40, 30 form a right angle​

Would 20, 40, 30 form a right angle