High School

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If [tex]$-100 a^4 r^2 y$[/tex] is divided by [tex]$\frac{1}{4} a r^2 y$[/tex], the quotient is:

(a) [tex]$-25 a^5 y^2$[/tex]
(b) [tex]$25 x^3$[/tex]
(c) [tex]$-400 a^3$[/tex]

Answer :

Sure! Let's work through the division step-by-step.

We're trying to divide the expression [tex]\(-100 a^4 r^2 y\)[/tex] by [tex]\(\frac{1}{4} a r^2 y\)[/tex].

### Step 1: Setup the Division

Write the division of the given expressions:

[tex]\[
\frac{-100 a^4 r^2 y}{\frac{1}{4} a r^2 y}
\][/tex]

### Step 2: Work with Coefficients

First, handle the coefficients:

- The coefficient in the numerator is [tex]\(-100\)[/tex].
- The coefficient in the denominator is [tex]\(\frac{1}{4}\)[/tex].

To divide these, perform the calculation:

[tex]\[
-100 \div \left(\frac{1}{4}\right) = -100 \times 4 = -400
\][/tex]

### Step 3: Work with Variables

Now, deal with the variables [tex]\(a\)[/tex], [tex]\(r\)[/tex], and [tex]\(y\)[/tex]:

- For [tex]\(a\)[/tex]:
- In the numerator, it's [tex]\(a^4\)[/tex].
- In the denominator, it's [tex]\(a^1\)[/tex] (since [tex]\(a\)[/tex] is just [tex]\(a\)[/tex]).

Subtract the exponents: [tex]\(a^{4-1} = a^3\)[/tex].

- For [tex]\(r\)[/tex]:
- Both the numerator and denominator have [tex]\(r^2\)[/tex].

Subtract the exponents: [tex]\(r^{2-2} = r^0 = 1\)[/tex].

- For [tex]\(y\)[/tex]:
- Both the numerator and denominator have [tex]\(y^1\)[/tex].

Subtract the exponents: [tex]\(y^{1-1} = y^0 = 1\)[/tex].

### Step 4: Combine the Results

Combine the results from the coefficients and variables:

The expression becomes [tex]\(-400 a^3\)[/tex].

### Conclusion

So, the quotient of the division is [tex]\(-400 a^3\)[/tex]. Therefore, the correct option is (c) [tex]\(-400 a^3\)[/tex].

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