Question
Black soils popularly known as “Black cotton soils”
are high in clay content and these soil develop wide cracks during the dry season but their iron rich granular structure makes them resistant to wind and water erosion. These soils are associated with which type of rocks?Solution
Black Soils: These soils are used for growing Cotton in states of Gujrat, Maharastra, Karnataka and Madhya Pradesh. They react well to irrigation because they have low humus yet are extremely moisture-retentive. Black soils are made up of volcanic rocks and lava-flow.
I). p2 - 20p + 51 = 0,
II). 2q2 - 7q + 6 = 0
Equation 1: x² - 90x + 2025 = 0
Equation 2: y² - 88y + 1936 = 0
1.3wx = 40 – wy
2. b2 = 2b + p
3. d2 + d = q
Now, observe the given conditions:
One root of equation...
I. x³= ((4)5+ (15)³)/(3)4
II. 8y³=(-13)3÷ √1521+ (3y)³
I. 4x2 + 3√7 x-7 =0
II. 7y2 + 4√7 y-5=0
- Suppose both the roots of q² + kq + 49 = 0 are real and equal, then determine the value of 'k'.
If x² + 2x + 9 = (x – 2) (x – 3), then the resultant equation is:
I. x3 = 1728
II. y2 – 15y + 56 = 0
- If the quadratic equation x² + 18x + n = 0 has real and equal roots, what is the value of n?
In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between 'p' and 'q' and choose...
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