Question
If (a +b) :(b+ c) :(c+ a) =4:7:9 And a +b+ c =30 then
find the value of c?Solution
a +b =4x          = 4×3=12 b +c =7x          =7×3=21 c +a= 9x          =9×3 =27 so, 2(a +b +c) = 4x+7x+9x=20x a+ b+ c =10x ATQ- 10x = 30 X=3 So now, c= (a +b +c) – (a +b) C = 30-12 =18
If p = 24 - q - r and pq + r(q + p) = 132, then find the value of (p² + q² + r²).
((99.9 - 20.9)² + (99.9 + 20.9)² )/(99.9 x 99.9 + 20.9 x 20.9) = ?
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Find the value of the given expression-
(4x+4 -5× 4x+2) / 15×4x – 22×4x
If 4x² + y² = 40 and x y = 6, then find the value
of 2x + y?
If p = 40 - q - r and pq + r(q + p) = 432, then find the value of (p² + q² + r²).
47.98 × 4.16 + √325 × 12.91 + ? = 79.93 × 5.91
If x + y = 4 and (1/x) + (1/y) = 24/7, then the value of (x3 + y3).
- If p = 20 - q - r and pq + r(p + q) = 154, then find the value of (p² + q² + r²).
If a = (√2 - 1)1/3, then the value of (a-1/a)3 +3(a-1/a) is:
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