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Monica [59]
3 years ago
11

HELP I BEGGGGggggggg

Mathematics
1 answer:
Masteriza [31]3 years ago
3 0

Answer:

c = 25m + 40

Step-by-step explanation:

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Hi. I need help with these questions.<br> See image for question. <br> Please answer no 10 and 11
Tanya [424]

9514 1404 393

Answer:

  10. (x, y) = (-3/8, 2 9/16)

  11. k = -1

Step-by-step explanation:

10. The value of x at the vertex is ...

  x = -b/(2a)

  x = -(-3)/(2(-4)) = -3/8

The corresponding value of y is ...

  y = 2 +(-3/8)(-3 +(-3/8)(-4)) = 2 +(-3/8)(-3/2) = 2 +(9/16)

The vertex is (x, y) = (-3/8, 2 9/16).

__

11. The discriminant is zero when the roots are equal.

  b² -4ac = 0

  (k-1)² -4(1)(-k) = 0

  k² -2k +1 +4k = 0

  k² +2k +1 = 0 . . . . . collect terms

  (k +1)² = 0 . . . . . . . . write as a square

  k = -1 . . . . . . . . . . . . the value of k that satisfies

<em>Check</em>

  x² -2x +1 = (x -1)² = 0 . . . . has equal roots: x=1.

3 0
3 years ago
the average temperature at the south pole is -49.62and the average temperature at north pole is -34.68. how much higher is the a
Alecsey [184]
-34.68 - (-49.62) = -34.68 + 49.62 = 14.94 degrees warmer at the north pole
7 0
2 years ago
4.26 as a decimal in simplest form
Bess [88]
You can not put a decimal to a decimal.So you meant to put a decimal to a fraction and the answer would be: 4.26 as decimal fraction = 426/100
6 0
3 years ago
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