3 years ago

What is the sales tax rate if a $7,190 purchase will have $568.01 of sales tax added to it?

Mathematics

1 answer:

inna [77]3 years ago

5 0

Answer:

7.9%

Step-by-step explanation:

568.01/7190=0.079=7.9%

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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:

5 players participated in the tournament.

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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Answer:

Step-by-step explanation:

Intercept theorem

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⇒ $\frac{6}{6+?} =\frac{4}{4+2}$

⇒ ? = 3

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2 years ago

Mr perry bought a computer for $1,920 including tax. If he pays for it in 16 equal payments what will be the dollar amount of ea

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A car drives 50 miles in 40 minutes. how many miles does the car travel per minute

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50 divided by 40 equals 1.25! So the car is going 1.25 mph

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Tell whether the given value is a solution of the inequality. x + 1 > 10; x = 9

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x > 9

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