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guapka [62]
2 years ago
15

Write a pair of equivalent fractions for 2/5?.​

Mathematics
1 answer:
mariarad [96]2 years ago
7 0

Step-by-step explanation:

4/10

6/15

8/20

10/25

these were some

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At a gymnastics meet, twenty gymnasts compete for first, second, and third place. How many ways can first, second, and third pla
ExtremeBDS [4]
Part A:

Given that a<span>t a gymnastics meet, twenty gymnasts compete for first, second, and third place. The number of ways </span><span>first, second, and third place can be assigned</span><span> is given by

^{20}P_3= \frac{20!}{(20-3)!}  \\  \\ = \frac{20!}{17!} =20\times19\times18 \\  \\ =6,840\ ways



Part B:

</span>Given that at a gymnastics meet, twenty gymnasts compete for first, second, and third place. If the t<span>hird place has been announced the number of ways that the remaining two places can be assigned</span> is given by :

<span>^{19}P_2= \frac{19!}{(19-2)!}  \\  \\ = \frac{19!}{17!} =19\times18 \\  \\ =342\ ways
</span>


Part C:

Given that at a gymnastics meet, twenty gymnasts compete for first, second, and third place. If the third and second places have been announced the number of ways that the <span>first place</span> can be assigned is given by :

^{18}P_1= \frac{18!}{(18-1)!}  \\  \\ = \frac{18!}{17!} =18\ ways
7 0
3 years ago
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Add -8 + (-1)= <br> -7 <br> -9 <br> 9 <br> 7
sergejj [24]

Answer:

-9

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6 0
3 years ago
Number 6 part a &amp; b<br> Number 7<br> Please &amp; thank you
miv72 [106K]

Answer:

6- Part A: 750a+1200r=1000000

    Part B: 1065a+876r=1000000

Solution of the system: a\approx521.739\;\;\;\;b\approx507.246

Step-by-step explanation:

<u>Part A:</u>

In words, the equation is formed like this:

Total kg of Arabica + Total kg of Robusta = Total kg of coffee

Now, the total of each yield is calculated by the product of kg/hectare and number of hectares. Thus, the equation is:

750a+1200r=1000000

<u>Part B:</u>

In words:

Arabica's worth + Robusta's worth  = plantation worth

Each yield's worth is given by the product of the price per kg and the corresponding production. So, the equation is:

1.42(750a)+0.73(1200r)=1000000\\1065a+876r=1000000

3 0
3 years ago
Which list shows all the factors of 54? A. 1, 2, 3, 6, 9, 12, 18, 27, 54 B. 1, 2, 3, 6, 9, 18, 27, 54 C. 1, 2, 3, 6, 9, 18, 54 D
sergey [27]

Answer:

C

Step-by-step explanation:

Bc I have Big Brain and Google is nice

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3 years ago
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Just number 2 please
Nezavi [6.7K]

Answer:

It has 3 sides and the measure is 3

Step-by-step explanation:

6 0
3 years ago
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