2 years ago

WILL MARK BRAINLIST!!!!!!!!!

Mathematics

1 answer:

vlada-n [284]2 years ago

4 0

You are correct, 153 in^2.

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Select the correct answer which graph passes the vertical line test

Volgvan

Answer:

Step-by-step explanation:

Do you have the options?

For the vertical line test, you can only use the X once per Y. You can not have more than one X.

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2 years ago

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In a small chess tournament, 20 matches were played. Find out how many people were involved if it is known that each participant

Nina [5.8K]

Answer:

<em>5</em><em> players participated in the tournament.</em>

Step-by-step explanation:

In a small chess tournament, 20 matches were played.

Let us assume that n number of players participated in the tournament

As in each game 2 players play, so the number of ways they can play is,

$=\ ^nC_2$

As they played 2 games with every other participant in the tournament.

So the total number of games is,

$=\ 2\times ^nC_2$

But it is given to be 20, so

$\Rightarrow \ 2\times ^nC_2=20$

$\Rightarrow \ ^nC_2=10$

$\Rightarrow \dfrac{n!}{2!(n-2)!}=10$

$\Rightarrow \dfrac{n(n-1)}{2}=10$

$\Rightarrow {n(n-1)=20$

As $5\times 4=20$ , so we get n=5.

Therefore, 5 players participated in the tournament.

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2 years ago

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13 + k3= 11 Show work pls

zaharov [31]

13+3k=11
-Move constant to the right-hand side and change its sign
3k=11-13

Calculate the difference
3k=-2
Divide both sides by 3
K= -2/3

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3 years ago

What is the volume of the prism?<br> ft3<br> 5.6 cm<br> cm<br> 9 cm<br> 7.8 cm

Doss [256]

Answer:

I can not answer this question because vital information is missing.

Step-by-step explanation:

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3 years ago

30 minutes to 90 minutes as a fraction in lowest terms

Svetllana [295]

<h2>Answer: 1/3</h2>

Step-by-step explanation: 30:90 = 10:30 =1:3 = 1/3

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2 years ago