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Blizzard [7]
4 years ago
10

If 2a+1/2a=10 find : 4a2+1/4a2

Mathematics
1 answer:
snow_lady [41]4 years ago
8 0

Answer:

98

Step-by-step explanation:

(2a + \frac{1}{2a} )² = 4a² + 2 + \frac{1}{4a^2} , thus

10² = 4a² + 2 + \frac{1}{4a^2} ( subtract 2 from both sides )

100 - 2 = 4a² + \frac{1}{4a^2} , that is

4a² + \frac{1}{4a^2} = 98

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Answer:

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Step-by-step explanation:

If you round $246 to 240, then divide it by 3, you should get $80. The cost per pair should be around $80 each

For the exact answer you take the amount spent (246) and divide it by the amount of jeans she bought (3).

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