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In the following questions two equations...

In the following questions two equations I. and II. are given. You have to solve both the equations and mark the appropriate options
I. ` 12 x ^(2) - 16 x + 5 = 0 `
II. ` 30 y^(2) - 61 y + 30 = 0 `

A

` x lt y `

B

` x gt y `

C

` x le y `

D

` x le y `

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equations provided, we will use the quadratic formula for both equations. The quadratic formula is given by: \[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \] ### Step 1: Solve the first equation \(12x^2 - 16x + 5 = 0\) 1. Identify coefficients: - \(a = 12\) - \(b = -16\) - \(c = 5\) 2. Substitute into the quadratic formula: \[ x = \frac{-(-16) \pm \sqrt{(-16)^2 - 4 \cdot 12 \cdot 5}}{2 \cdot 12} \] 3. Calculate the discriminant: \[ (-16)^2 = 256 \] \[ 4 \cdot 12 \cdot 5 = 240 \] \[ b^2 - 4ac = 256 - 240 = 16 \] 4. Substitute back into the formula: \[ x = \frac{16 \pm \sqrt{16}}{24} \] \[ x = \frac{16 \pm 4}{24} \] 5. Calculate the two possible values for \(x\): - First value: \[ x_1 = \frac{16 + 4}{24} = \frac{20}{24} = \frac{5}{6} \approx 0.8333 \] - Second value: \[ x_2 = \frac{16 - 4}{24} = \frac{12}{24} = \frac{1}{2} = 0.5 \] ### Step 2: Solve the second equation \(30y^2 - 61y + 30 = 0\) 1. Identify coefficients: - \(a = 30\) - \(b = -61\) - \(c = 30\) 2. Substitute into the quadratic formula: \[ y = \frac{-(-61) \pm \sqrt{(-61)^2 - 4 \cdot 30 \cdot 30}}{2 \cdot 30} \] 3. Calculate the discriminant: \[ (-61)^2 = 3721 \] \[ 4 \cdot 30 \cdot 30 = 3600 \] \[ b^2 - 4ac = 3721 - 3600 = 121 \] 4. Substitute back into the formula: \[ y = \frac{61 \pm \sqrt{121}}{60} \] \[ y = \frac{61 \pm 11}{60} \] 5. Calculate the two possible values for \(y\): - First value: \[ y_1 = \frac{61 + 11}{60} = \frac{72}{60} = 1.2 \] - Second value: \[ y_2 = \frac{61 - 11}{60} = \frac{50}{60} = \frac{5}{6} \approx 0.8333 \] ### Summary of Results: - Values of \(x\): \(0.8333\) and \(0.5\) - Values of \(y\): \(1.2\) and \(0.8333\) ### Step 3: Determine the relationship between \(x\) and \(y\) From the calculated values: - \(x_1 = 0.8333\) and \(y_2 = 0.8333\) - \(x_2 = 0.5\) and \(y_1 = 1.2\) Comparing the values: - \(y_1 (1.2) > x_1 (0.8333)\) - \(y_2 (0.8333) = x_1 (0.8333)\) - \(y_1 (1.2) > x_2 (0.5)\) Thus, we can conclude that \(y\) is greater than or equal to \(x\).
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