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mezya [45]
3 years ago
9

Match the equivalent expressions. Pls help me

Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0

Answer:

1/9 = 3^-2

1/8 = 2^-3

9 = 3²

8 = 2³

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Answer:

7/25,3/10, 24.40%,37.60%

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I have some questions regarding combinations in finite. Here is my first one I am stumped on:
podryga [215]

We will get the number of possible selections, and then subtract the number less than 25 cents.

We can choose the number of dimes 5 ways 0,1,2,3 or 4.
We can choose the number of nickels 4 ways 0,1,2 or 3.
We can choose the number of quarters 3 ways 0,1, or 2.

That's 5*4*3  = 60 selections 

Now we must subtract from the 60 the number of selections of coins that are less than 25 cents. These will involve only dimes and nickels. 

To get a selection of coin worth less than 25 cents:
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If we use exactly 1 dime , we can use 0,1,2, or all 3 nickels.
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And there is 1 other selection less than 25 cents, 2 dimes and no nickels. 

So that's 4+3+1 = 8 selections which we must subtract from the 60.
 
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3 years ago
A father left 280 acres of land to be divided among his sons Al and Bob in the ratio 4:3, respectively. How many acres should Al
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Answer:

160 acres

Step-by-step explanation:

Given data

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