Question
I. x2Â - 9x - 52 = 0 II.
y2Â - 16y + 63 = 0 In each of the following questions, there are two equations. You have to solve both equations and mark the correct answer.Solution
I. x2Â - 9x - 52 = 0 => x2Â - 13x + 4x - 52 = 0 => x(x - 13) + 4(x - 13) = 0 => (x - 13) (x + 4) = 0 => x = 13, -4 II. y2Â - 16y + 63 = 0 => y2Â - 9y - 7y + 63 = 0 => y(y - 9) - 7(y - 9) = 0 => (y - 9) (y - 7) = 0 => y = 9, 7 Hence, the relationship cannot be established between x and y.
What approximate value will replace the question mark (?) in the following?
√25...
Find the approximate value of Question mark(?). There is no requirement to find the exact value.
(2999.77 ÷ 74.85) + (√624.95 × 4.09) = ?
...25.11% of 239.99 + √143.97 ÷ 12.02 = ?
28.01% of 3650 + 40.10% of 150 – 301.75 = ?
The interest received by investing Rs. 1200 for 2 years at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple int...
(363.89% of 224.98 – 319.86% of 134.94) ÷ ? = √(134.88 ÷ 15.25)
179.89 + 17.04² + ?³ = √783.97 * 29.09
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
74.856% of 639.98 - 15.098 of √145 = ? of 14.972
A man must travel 600 km in 12 hours. If he traveled the first 40% of the journey at a constant speed of 80 km/h, at what speed must he travel the remai...
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