Mathematics, 05.05.2020 12:53 obalzano6817

Adam is n years old . Mary Beth is 3n + 4 years old . If Adam is 9 years old, how old is Mary Beth?

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Step-by-step explanation:

Answer from: SoccerHalo

If you mean Mary Beth's age is 3 times Adam's age. If thats what you mean by 3n then Mary beth is 31 years old.

Step-by-step explanation:

First set up your equation for Marys age: 3n + 4. Next subistute (replace the n with a 9 for adams age.) You should have 3 times 9 + 4. That means the elling you to equation will be 3(9) + 4. (The whenever you see #(#) that means you multiple the two numbers together. In other words #(#) is another way of telling you to multpile.) So based on Order of Operations (PEMDAS) you would multipile the 3 and the 9 to get 27. Then you would add 27 and 4 to get 31. This means that Mary Beth is 31 years old.

Answer from: Quest

1: -2 3/4, -2 1/2, -14, 0, 3, 8 1/3

2: -4, -3, -2 1/2, -2 1/4, 3 1/4,

step-by-step explanation:

Answer from: Quest

If i'm correct the answer is $15.97

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