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What is the result of isolating [tex]y^2[/tex] in the equation below?

[tex]4x^2 + 25y^2 = 100[/tex]

A. [tex]y^2 = 100 - \frac{4}{25}x^2[/tex]
B. [tex]y^2 = 4 - \frac{4}{25}x^2[/tex]
C. [tex]y^2 = 25 - \frac{4}{25}x^2[/tex]
D. [tex]y^2 = 100 - 4x^2[/tex]

Answer :

Let's solve the equation [tex]\(4x^2 + 25y^2 = 100\)[/tex] to isolate [tex]\(y^2\)[/tex].

1. Start with the original equation:
[tex]\[
4x^2 + 25y^2 = 100
\][/tex]

2. Subtract [tex]\(4x^2\)[/tex] from both sides to move it to the other side of the equation:
[tex]\[
25y^2 = 100 - 4x^2
\][/tex]

3. Divide every term by 25 to solve for [tex]\(y^2\)[/tex]:
[tex]\[
y^2 = \frac{100 - 4x^2}{25}
\][/tex]

4. Simplify by dividing each component inside the fraction by 25:
[tex]\[
y^2 = \frac{100}{25} - \frac{4x^2}{25}
\][/tex]

5. Simplify the division:
[tex]\[
y^2 = 4 - \frac{4}{25}x^2
\][/tex]

This matches option B:
[tex]\[
y^2 = 4 - \frac{4}{25}x^2
\][/tex]

So, the correct answer is B. [tex]\(y^2 = 4 - \frac{4}{25} x^2\)[/tex].

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