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rjkz [21]
3 years ago
12

If x=2 and y=5,evaluate the following expression: 20+2(3y−4x)

Mathematics
2 answers:
Xelga [282]3 years ago
7 0

Answer:

34

Step-by-step explanation:

hope this helps :)

Nikolay [14]3 years ago
4 0

Answer:

34

Step-by-step explanation:

First, plug in numbers and then solve...

  1. 20+2(3x5 - 4x2)
  2. 20+2(15-8)
  3. 20+2x7
  4. 20+14
  5. =34
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4 years ago
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3 years ago
Please help I am terrible at algebra
Marina CMI [18]

Answer:

y = (x-0)^2 + (-5)  ⇒ y = x^2 - 5

Step-by-step explanation:

The general vertex form of the parabola  y = a(x - h)² + k

Where (h,k) is the coordinates of the vertex.

As shown at the graph the vertex of the parabola is the point (0, -5)

So,

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So, at x = 1 ⇒ y = -4

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