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deepaksoniGuru

Asked: March 19, 2021In: ICSE

If (pa + qb) : (pc + qd) :: (pa – qb) : (pc – qd) prove that a : b : : c : d

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Question no.4 From ML aggarwal book, class10, chapter 7, ratio and proportion In this question we have been given that If ...Read more

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deepaksoniGuru

Asked: March 19, 2021In: ICSE

Question 3. If (4a + 5b) (4c – 5d) = (4a – 5d) (4c + 5d), prove that a, b, c, d are in proporton.

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This is a basic question from ML aggarwal book of class 10th, chapter 7, ratio and proportion., ICSE board In this ...Read more

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deepaksoniGuru

Asked: March 19, 2021In: ICSE

(i) If 5x+7y/5u+7v=5x−7y/5u−7v , Show that x/y=u/v (ii) 8a−5b/8c−5d=8a+5b/8c+5d , prove that a/b=c/d

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This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion. It has been ...Read more

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deepaksoniGuru

Asked: March 19, 2021In: ICSE

If a : b : : c : d, prove that (i) (2a+5b) /(2a−5b)=(2c+5d)/(2c−5d) (ii)( 5a+11b)/(5c+11d) =(5a−11b) /(5c−11d) (iii) (2a + 3b)(2c – 3d) = (2a – 3b)(2c + 3d) (iv) (la + mb) : (lc + mb) :: (la – mb) : (lc – mb)

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication Here we have been ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, b, c, d are in continued proportion, prove that: (i) (a3+b3+c3) /(b3+c3+d3) =a/d (ii) (a2 – b2) (c2 – d2) = (b2 – c2)2 (iii) (a + d) (b + c) – (a + c) (b + d) = (b – c)2 (iv) a: d = triplicate ratio of (a – b): (b – c) (v) [ (a-b) /c+(a-c) /b]2 – [(d-b) /c +(d-c) /b)] 2 =(a-d) 2(1/c2-1/b2)

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This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion. It is given ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, b, c are in continued proportion, prove that: (a+b)/(b+c) =a2(b-c) /b2(a-b) (ii) 1/a3+1/b3+1/c3=a/b2c2+ b/c2a2+c/a2b2 (iii) a: c = (a2 + b2): (b2 + c2) (iv) a2b2c2 (a-4 + b-4 + c-4) = b-2 (a4 + b4 + c4) (v) abc (a + b + c)3 = (ab + bc + ca)3 (vi) (a + b + c) (a – b + c) = a2 + b2 + c2

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication This question has been ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If x, y, z are in continued proportion, prove that: (x + y)2/ (y + z)2 = x/z.

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication This question has been ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, b, c and d are in proportion, prove that: (i) (5a + 7v) (2c – 3d) = (5c + 7d) (2a – 3b) (ii) (ma + nb): b = (mc + nd): d (iii)(a4 + c4): (b4 + d4) = a2c2: b2d2 (iv)(a2+ab) /(c2+cd) =(b2-2ab)/(d2-2cd) (v) (a+c)3 /(b+d) 3=a(a-c) 2/(b(b-d)2 (vi) a2+ab+b2/a2-ab+b2=c2+cd+d2/c2-cd+d2 (vii) (a2+b2) /(c2+d2) =ab+ad-bc/bc+cd-ad) (viii) abcd(1/a2+1/b2+1/c2+1/d2)=a2+b2+b2+c2)

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This is a basic question from ML aggarwal book of class 10th, chapter 7, ratio and proportion., ICSE board If a, ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If ax = by = cz; prove that x²/yz+y²/zx+z²/xy=bc/a²+ca/b²+ab/c²

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication We hve that ax ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a/b = c/d = e/f prove that: (i) (b2 + d2 + f2) (a2 + c2 + e2) = (ab + cd + ef)2

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This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion. It is given ...Read more

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