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Zolol [24]
2 years ago
9

Help i only have 2 more questions and im done with this quiz

Mathematics
1 answer:
kvv77 [185]2 years ago
6 0

{d}^{2}  \div (4c) - b + 5a \\  =  {(8)}^{2}  \div( 4 \times 2) - 3 + 5 \times  \frac{1}{5}  \\  = 64  \div 8 - 3 + 1 \\  = 8 - 3 + 1 \\  = 9- 3 \\  = 6

<u>Answer</u><u>:</u>

6

Hope you could understand.

If you have any query, feel free to ask.

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Answer:

y= x2 + 8x - 1 is y=(x+4) 2-17

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First find  - b/2 = - 4, so  -4 will be added to x inside the parenthesis.

Next , find c - b2 to find the value you added at the end

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y= (x+4) 2 - 17

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Which of the following is the graph of (x-2)^2 + (y+1)^2 = 9? (Brainly doesn't seem to want to let me put up pictures. Sorry guy
forsale [732]
If you want to cheat, paste the formula in Wolfram Alpha. However, this one is not that difficult. From the fact that x and y are squared you can infer that this is a circle. The 9 reveals that the radius r^2 is 9, so radius is 3.

The (x-2) tells us that the circle is shifted to the right by 2. Likewise, y+1 shifts it down by one. So the center is at (2,-1). If the equation would be x^2 + y^2 = 9, you'd have a circle exactly on the origin.

Hopefully this helps you break down the equation and pick the right picture!
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