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Nitella [24]
2 years ago
10

Find the vertex of y = 5x² - 4

Mathematics
1 answer:
igomit [66]2 years ago
7 0

Answer: (0,-4)

explanation: write in vertex form and use this form to find the vertex ( h , k )

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What is the sum of (8a+2b-4)
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Which ratios approximate pi ​(​)?
kramer

9514 1404 393

Answer:

  A: 66/21

  E: 22/7

Step-by-step explanation:

The offered choices reduce to 3 1/7 or to 3. The best approximations of those given are the ones that reduce to 3 1/7.

  A: 66/21 = 22/7 = 3 1/7

  B: 60/20 = 3

  C: 21/7 = 3

  D: 45/15 = 3

  E: 22/7 = 3 1/7

___

<em>Comment on pi approximations</em>

The ratio 22/7 differs from π by about 0.04%. A better approximation is 355/113, which differs from π by about 0.000008%. The approximation 3.14 differs from π by about 0.05%.

5 0
3 years ago
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