Question
The corresponding medians of two similar triangles are
16 cm and 20 cm. If the area of the first triangle is 288 cm, then find the area of the second triangle.Solution
Let the area of the second triangle = x cm² Then (Area of the first triangle) × (median of the second triangle) ² = (area of the second triangle) × (median of the first triangle) ² 288 × 400 = x × 256 x = 450cm²
If x2 – 10x + 20 = 0, then find the value of (x – 3)2 + 1/(x – 3)2
((99.9 - 20.9)² + (99.9 + 20.9)² )/(99.9 x 99.9 + 20.9 x 20.9) = ?
...If (5x + 2)3 + (x – 1)3 + 8(3x – 7)3 = 6(5x + 2) × (x – 1) × (3x – 7), then the value of (5x + 3) is
...Find the value of ‘x’ in the given expression:
(49/16)x × (64/343)x-1 = 4/7
If x2 = 15x + 1, then find the value of {x3 - (1/x3) }.
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A dishonest dealer claims to sell goods at cost price but uses a false weight of 900g instead of 1kg. What is his profit percentage?
Present age of Vikrant is 20% less than the present age of Priya. Age of Vikrant 5 years ago was 50% the present age of Priya. Find the present average ...
If (x – 3) is a factor of (x2 + 4qx – 2q), then the value of q is:
{(21/20) + (20/21)}2 - {(21/20) - (20/21)}2 = ?
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