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lapo4ka [179]
2 years ago
13

In a bag, the ratio of red to blue counters is 3:4.

Mathematics
1 answer:
Elza [17]2 years ago
7 0
R/b = 2/3, so r = 2/3 b
(r-3)/b = 3/5
5(r-3) = 3b
5(2/3 b - 3) = 3b
Just solve for b
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What is the coefficient in the following expression <br><br>5+3x+ (-3)​
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Step-by-step explanation:

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Johnny has a bag with 84 coins in it. If the ratio of dimes to nickels to pennies is 3 to 2 to 1, how many
omeli [17]

Answer:

28

Step-by-step explanation:

Number of coins in the bag ⇒ 84

Give that,

Dimes : Nickels : Pennies

  3       :       2     :   1

You can see that, there are 6 parts . ( 3 + 2 + 1 = 6 )

And now let us write the types of coins in fractions.

Dimes ⇒  \frac{3}{6}

Nickels ⇒ \frac{2}{6}

Pennies ⇒ \frac{1}{6}

And now they're asking for the number of nickels.

To find that, you can multiply 84 ( number of coins) by it's fraction ( 2/6).

Let us solve.

84 × \frac{2}{6}

\frac{84*2}{6}

\frac{168}{6}

28

Therfore, there are 28 nickels.

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2 years ago
Find the area of the regular 18-gon with radius 11 mm
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Answer:

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Step-by-step explanation:

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