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Ilya [14]
2 years ago
14

Given that a=4, b=4 and c=-2 work out b(squared) -2ac

Mathematics
1 answer:
Nimfa-mama [501]2 years ago
3 0

Answer:

32

Step-by-step explanation:

substitute the given values of a, b and c into the expression:

b² - 2ac = 4² - (2 x 4 x -2)

             = 16 - (-16)

             = 16 + 16

             = 32

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1 year ago
Which is cheaper? Buying 3 cans of bake beans at 1.50 each or a triple pack for $5
Fiesta28 [93]

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Buying 3 cans individually.

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75 - 3.5x - 4x = 4x + 6
stepladder [879]

Answer:

x = 6

Step-by-step explanation:

Step 1: Write equation

75 - 3.5x - 4x = 4x + 6

Step 2: Solve for <em>x</em>

  1. Combine like terms: 75 - 7.5x = 4x + 6
  2. Add 7.5x on both sides: 75 = 11.5x + 6
  3. Subtract 6 on both sides: 69 = 11.5x
  4. Divide both sides by 11.5: 6 = x
  5. Rewrite x = 6

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

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