Question

Chapter 7 Questions- answer 1. Correct the following statements and rewrite them in your notebook. (a) Stem absorbs water and minerals from the soil. (b) Leaves hold the plant upright. (c) Roots conduct water to the leaves. (d) The number of sepals and petals in a flower is always equal. (e) If the sepals of a flower are joined together, its petals are also joined together (f) If the petals of a flower are joined together, then the pistil is joined to the petal. Answers (a) Roots absorb water and minerals from the soil. (b) Roots hold the plant upright. (c) Stem conducts water to the leaves. (d) The number of petals and sepals in a flower is usually equal. (e) If the sepals of a flower are joined together, its petals are not necessarily joined together. (f) If the petals of a flower are joined together, then the pistil is not necessarily joined to the petal.​

Answer 1

Answer:

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Answer 2

Answer:

(x + 3) : (x + 11) = (x - 2) : (x + 1)

∴ (x + 3)(x +1) = (x – 2)(x + 11)

∴ x(x +1) + 3(x + 1) = x(x + 11) – 2(x + 11)

∴ x2 + x + 3x + 3 = x + x – 2x – 22

∴ x2 + 4x + 3 = x2 + 9x – 22

∴ 4x + 3 = 9x – 22

∴ 3 + 22 = 9x – 4x

∴ 25 = 5x

∴ x = 5