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torisob [31]
3 years ago
15

Suppose a seventh graders birthday is today, and she is 12 years old. How old was she 3 1/2 years ago? Write an equation, and us

e a number line to model your answer
Mathematics
1 answer:
german3 years ago
4 0

Answer:

he age of girl 3 \frac{1}{2} years ago is 8.5 years  .

Step-by-step explanation:

Given as :

The present age of seventh grader girl = 12 years

Let The age of her 3 \frac{1}{2} years ago = x years

So The age of girl \frac{7}{2} years ago = x years

<u>Now, According to question</u>

The age of girl 3.5 years ago = 12 - 3.5

Or,  The age of girl 3.5 years ago = 8.5 years

Hence The age of girl 3 \frac{1}{2} years ago is 8.5 years  . Answer

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4 years ago
Keith has $500 in a savings account at the beginning of the summer. He withdraws $25 each week for food, clothes, and movie tick
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Answer:

You can put this solution on YOUR website!

the inequality is 500 - 25x >= 200

this insures that he will have at least 200 at the end of the summer.

subtract 200 from both sides of that inequality and add 25x to both sides of that inequality to get 500 - 200 >= 25x

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12 >= x means x <= 12.

 

when x is smaller than or equal to 12, he will be guaranteed to have at least 200 in the account at the end of the summer.

when x = 12, what is left in the account is 500 - 25 * 12 = 200.

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the maximum number of weeks he can withdraw money from his account is 12.

Step-by-step explanation:

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