Step-1

Title: Find the value of x/y

Grade: 7-a Lesson: S4-L7

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step Type Explanation Answer

1

Problem

Find the postive value of \$ x/y\$:
\$ (25x^2 + 36y^2)/(xy) = 60 \$

2

Hint

Moving xy to the right side

\$ (25x^2 + 36y^2) = 60(xy) \$

3

Step

After simplification

\$ 25x^2 - 60(xy) + 36y^2 = 0 \$

4

Step

Using identity \$a^2 - 2ab + b^2 = (a - b)^2\$

\$ (5x - 6y)^2 = 0 \$

5

Step

Applying squareroot on both sides

\$ \sqrt(5x - 6y)^2 = \sqrt0 \$

6

Step

Cancelling Square & Squareroot

\$ (5x - 6y) = 0 \$

7

Step

Moving -6y to left side

\$ (5x = 6y) \$

8

Step

Transforming the above equation into \$ x/y \$ form

\$ 5x = 6y \$

9

Step

After simplification

\$ 5x/y=6 \$

10

Step

After transforimg the equation into \$x/y\$

\$ x/y=6/5 \$

11

Step

The positive valve of \$ x/y \$ is

\$ x/y=6/5 \$

12

Answer

B

Tutor: Questions

Seq Type Question Audio

1

Problem

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2

Clue

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3

Hint

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4

Step

What did you learn from the Steps?

5

Step

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