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20 results for "algebra"
Questions 20
If (a + b) : (a - b) = 15 : 1, then what is the ratio (a² + b²) : (a² - b²)?
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The sum of two numbers is 40 and their difference is 4. What is the ratio of the two numbers?
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Find a third proportional to (x² - y²) and (x - y).
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The third proportional to (a² - b²) and (a - b) is:
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If a : b = c : d, then (ma + nc) : (mb + nd) is equal to:
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If x/5 = y/8, then (x+5) : (y+8) is equal to:
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If 4a = 5b and 7b = 9c, then find the ratio a : c.
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If a/b = 4/5 and b/c = 15/16, then (c²-a²) / (c²+a²) is:
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The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1,250. Find the numbers.
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If a : b = c : d, then (ma + nc) / (mb + nd) is equal to:
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If x : y = 3 : 4, then find the value of (7x + 3y) : (7x - 3y).
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If a : b = 2 : 1, then the value of (a² - b²) : (a² + b²) is:
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If x : y = 5 : 2, find the value of (8x + 9y) : (8x + 2y).
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Two numbers are in the ratio 1 : 2. If 7 is added to both, their ratio changes to 3 : 5. Find the greater number.
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The sum of the ages of a father and his son is 45 years. Five years ago, the product of their ages was 124. What is the current age of the father?
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If a/2 = b/3 = c/4, then find A:B:C.
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If (x + y) : (x - y) = 4 : 1, then (x² + y²) : (x² - y²) is equal to:
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If x : y = 3 : 4, then find (7x + 3y) : (7x - 3y).
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If x/5 = y/8, then (x + 5) : (y + 8) is equal to:
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If x : y = 3 : 2, then find the value of (x + y)² : (x - y)².
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