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cricket20 [7]
3 years ago
10

I have a test and this is practice and I don't understand this at all

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
6 0
For the last on you need to set up a proportion with the degrees. You know the arcs add to 360 and that small section is 120 so you set it equal to x over the entire area. X is the answer. The formulas are next to all answers

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Answer:

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Step-by-step explanation:

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The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was twice as old as Ben. How old are they both now?
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Let us say that:

K = age of Kristen

B = age of Ben

 

From the problem, we make the equations:

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eqtn 2: (K – 4) = 2 (B – 4)

 

Simplifying eqtn 2:

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From eqtn 2:

K = 2 B – 4 = 2 (12) – 4 = 20

 

So Kristen is 20 while Ben is 12.

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