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lana66690 [7]
4 years ago
9

K5 •m, if k=2 and m=5

Mathematics
1 answer:
kifflom [539]4 years ago
7 0
What you need to do is very easy. If K=2 and m=5 all you need to do is put them in place. So the 2 would go in front of the 5 and the 5 would go right after the multiplication symbol.

25*5 but better way is to have parentheses so it wont look like 25. 
2(5)*5= 50 
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At a currency exchange, 3 U.S. dollars can be exchanged for 5 Japanese Yin. How many Yin will you receive for 1 U.S. dollar? As
salantis [7]

Answer:

The first answer is 1.66 Japanese Yin

The second answer is 0.60 U.S. Dollars

Step-by-step explanation:

The ratio of U.S. Dollars (USD) to Japanese Yin (JY) is 3 : 5 -

=  USD : JY

=     3   :   5

To find the number of Yin received for 1 Dollar, divide the ratio on both sides by 3 as for 3 Dollars you receive 5 Yin -

=  USD : JY

=     3    :    5

=     1     :   5/3

=     1     :   1.66

So, for 1 USD you will receive 1.66 JY

To find the number of Dollars received for 1 Yin, divide the ratio on both sides by 5 as for 5 Yin you receive 3 Dollars -

=  USD : JY

=     3    :    5

=   3/5   :   1

=   0.60 :   1

So, for 1 JY you will receive 0.60 USD

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4 years ago
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Sphinxa [80]

Answer:

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Step-by-step explanation:

(2x+1)(x+3)

We can solve equations like this using the FOIL (First Outside Inside Last) method.

(2x)(x)+(2x)(3)+(1)(x)+(1)(3)  -> 2x^2+6x+x+3

Now we can simplify using like terms

2x^2+7x+3

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