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siniylev [52]
1 year ago
14

Tonya is twice Kevin's age. In three years, Tonya will be 17. And in another three years, Uncle Rob will be three times Tonya’s

age.
Today, Kevin is ____years old, and Uncle Rob ___is years old.
Mathematics
2 answers:
zhuklara [117]1 year ago
7 0
To find Kevin's age, subtract 17 by 3 to find how old Kevin is, which is 7. Then, to find Uncle rob's age, add 17 plus 3 to get 20, then multiply that by 3 to see how old Uncle Rob will be, which is 60.Then, subtract 6 from 60 to get 54.The final answer is that Kevin is 7 years old, and Uncle Rob is 54 years old. Hope this helps!
bezimeni [28]1 year ago
6 0

Answer:

Today, Kevin is 7 years old, and Uncle Rob 54 is years old.

Step-by-step explanation:

Tonia will be 17 years old in 3 years,  so, to get Tonia´s age now, make 17-3. She is 14 years old today.

As Tonia twice the age of Kevin,  so,  Kevin´s age is the actual age of Tonia divided by 2. That will be 14/2=7

To get Uncle´s age ,  we start at 17 years of Tonia, We must added it 3 years,  so she will be 20 years old. Remember we have added 6 years from today.  

Then,  if uncles will be three times Tonia´s age, that will be =20*3=60.

Now,  6 years before,  he is 60-6 =54 years

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Answer:

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1. R is reflexive if for each element a∈B, aRa.

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3. R is transitive if satisfies that if aRb and bRc then aRc.

Then, our set B is \{1,2,3,4\}.

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Then, we need:

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and the analysis for be transitive is the same that we did in a).

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For be symmetric

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For be transitive

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Then, the smallest relation reflexive, symmetric and transitive containing R1 is

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