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sergey [27]
3 years ago
9

in this line of circles, the ratio of the red circles to blue circles is 1:3. how many more red circles would need to be added t

o make the ratio of red to blue 3:1​
Mathematics
1 answer:
Tems11 [23]3 years ago
5 0

Answer:

Step-by-step explanation:

If we assume that initially

Number of red counter is 1

Number of blue counter is 3

Now to make ratio reverse you need to add 8 more red counters so that ratio becomes

9:3=3:1

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Answer:

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Step-by-step explanation:

In this question we are trying to calculate the cost of exact amount of fabric used given the cost per area of the fabric.

To answer this question mathematically, we need to know the area of the bulletin board. To do this , we employ a mathematical approach. We know that the bulletin board is circular in shape from the question and thus we calculate the area of this shape.

Mathematically, the area of the circular bulletin board is pi * r^2 where r refers to the radius. From the question, we can identify that this radius is 2.5 feet. let’s insert this into the equation we have.

mathematically A = 2.5^2 * pi = 19.63 sq. feet

The cost of the fabric per square feet is 1.48.

now the cost for this area that we have will be 1.48 * 19.63 = 29.0524

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3 years ago
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ElenaW [278]

Answer:

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Bobby goes to one store and find a Christmas tree for $49.99 the store is having a 20% off sale Bobby decide to go across the st
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