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vfiekz [6]
3 years ago
5

How long does it take a runner to run 12km if he is running at a speed of 7km/h

Mathematics
2 answers:
Gnoma [55]3 years ago
8 0

Answer:

1.714285714285714 hours

Step-by-step explanation:

12/7

Rama09 [41]3 years ago
3 0

Answer:

about an hour and 42 minutes

Step-by-step explanation:

Time=Distance/Speed

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A parabola and its directrix are shown on the graph. On a coordinate plane, a parabola opens upward. It has a vertex at (0, 0) a
sukhopar [10]

Answer:

The focus of the parabola is at the point (0, 2)

Step-by-step explanation:

Recall that the focus of a parabola resides at the same distance from the parabola's vertex, as the distance from the parabola's vertex to the directrix, and on the side of the curve's concavity. In fact this is a nice geometrical property of the parabola and the way it can be constructed base of its definition: "All those points on the lane whose distance to the focus equal the distance to the directrix."

Then, the focus must be at a distance of two units from the vertex, (0,0), on in line with the parabola's axis of symmetry (x=0), and on the positive side of the y-axis (notice the directrix is on the negative side of the y-axis. So that puts the focus of this parabola at the point (0, 2)

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2 years ago
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P/4+6=8 (show work pls)
slavikrds [6]

Answer:

p = 8

Step-by-step explanation:

p/4 + 6 = 8\\p/4 + 4 * 6 /4 = 8

8 0
2 years ago
Hono Golf is a manufacturer of golf products in Taiwan and China. One of the golf accessories it produces at its plant in Tainan
Elodia [21]

Answer:

Type I error.

Step-by-step explanation:

The decision to shut the process is triggered by the conclusion that the average height is significantly different from 66 mm.

This means that the null hypothesis, that states that the average height is not significantly different from 66 mm (μ=66), has been rejected.

If the null hypothesis is rejected, the error that can have been made is to reject a true null hypothesis, when the process is functioning to specification and the average length is not significantly different from 66.

This is a Type I error, that happens when a true null hypothesis is rejected.

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2 years ago
Someone help plz!! I will give Brainlist!
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8 0
3 years ago
15. The floor plan of the basement of a shopping centre is drawn to a scale of 1:400.
maks197457 [2]

Answer:

  • 4 hectares

Step-by-step explanation:

<u>The scale factor is:</u>

  • k = 1/400

Applied to the area we consider k² as the area is the product of two dimensions.

<u>Find the actual area:</u>

  • 0.25 m² : (1/400)² =
  • 0.25 m² * 160000 =
  • 40000 m² =
  • 40000 * 1/10000 hectares =
  • 4 hectares
6 0
3 years ago
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