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2 years ago

Match each percent with the fraction or decimal equivalent. 5% 0.065 15% 0.07 6.5% 0.25 25% 3/20 7%

Mathematics

1 answer:

Anna [14]2 years ago

7 0

Explanation:

5% to fraction = 5/100

= 1/20

15% to fraction = 15/100

= 3/20

6.5% to decimal = 6.5/100

6.5 = 65/10

= 65/(10 ×100) = 65/1000

= 0.065

25% to decimal = 25/100

= 0.25

7% to decimal = 7/100

= 0.07

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Step-by-step explanation:

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3 years ago

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hichkok12 [17]

Answer:

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3 years ago

How to find r in this equation using combination formula C(8,r)=28<br>

slavikrds [6]

Answer:

r = 2

Step-by-step explanation:

We have the formula of $^nC_r = \frac{n!}{r! (n-r)!}$

Now, it is given that $^8C_r = \frac{8!}{r! (8-r)!} = 28$ ........ (1)

And we have to find the value of r which satisfy the above equation.

So, $r! (8-r)! = \frac{8!}{28} = \frac{40320}{28} = 1440$

Now, we have to use the trial method to find the value of r.

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Therefore, r = 2 (Answer)

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3 years ago

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