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Evgen
14 days ago
5

HELP!!!! 2 dot plots. Both number lines go from 0 to 10. Plot 1 is titled fifth grade. There are 2 dots above 1, 3 above 2, 1 ab

ove 3, 4 above 4, 5 above 5, 5 above 6, 2 above 7, 2 above 8, 0 above 9, 0 above 10. Plot 2 is titled seventh grade. There are 2 dots above 0, 2 above 1, 3 above 2, 5 above 3, 5 above 4, 3 above 5, 3 above 6, 1 above 7, and 0 above 8, 9, and 10.
The dot plot shows the number of hours, to the nearest hour, that a sample of 5th graders and 7th graders spend watching television each week. What are the mean and median?

The 5th-grade mean is
.

The 7th-grade mean is
.

The 5th-grade median is
.

The 7th-grade median is
.
Mathematics
2 answers:
PIT_PIT [9.1K]14 days ago
7 0

Answer:

5th-grade mean - 4.67

7th-grade mean - 3.46

5th-grade median - 5

7th-grade median - 3.5

babunello [8.4K]14 days ago
4 0
5th grade average - 4.67 7th grade average - 3.46 5th-grade median - 5 7th-grade median - 3.5 Step-by-step explanation:
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Response:

  • Refer to the attached graph
  • x₁ ≈ - 2.1
  • x₂ ≈ 0.2

Clarification:

To analyze log (−5.6x + 1.3) = −1 − x visually, graph these equations on the same coordinate system:

  • Equation 1: y = log (5.6x + 1.3)
  • Equation 2: y = - 1 - x

The first equation can be graphed using these characteristics of logarithmic functions:

  • Domain: values must be positive ⇒ -5.6x + 1.3 > 0 ⇒ x < 13/56 (≈ 0.23)

  • Range: all real values (- ∞, ∞)
  • x-intercept:

        log ( -5.6x + 1.3) = 0 ⇒ -5.6x + 1.3 = 1 ⇒ x = 0.3/5.6 ≈ 0.054

  • y-intercept:

       x = 0 ⇒ log (0 + 1.3) = log (1.3) ≈ 0.11

  • Choose additional values to create a table:

        x            log (-5.6x + 1.3)

        -1           0.8

        -2           1.1

        -3           1.3

  • This graph is shown in the attached image: it's represented by the red curve.

Graphing the second equation is simpler as it forms a straight line: y = - 1 - x

  • slope, m = - 1 (the coefficient of x)
  • y-intercept, b = - 1 (the constant term)
  • x-intercept: y = 0 = - 1 - x ⇒ x = - 1
  • This graph is indicated by the blue line in the image.

The resolution to the equations corresponds to the points where the two graphs intersect. The graphing method thus allows you to determine the x coordinates of these intersection points. Ordered from smallest to largest, rounded to the nearest tenth, we have:

  • x₁ ≈ - 2.1
  • x₂ ≈ 0.2

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Step-by-step explanation:

The image provided presents the complete problem statement while the word document contains the solution.

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Examining Talia's steps to derive the line equation, we identify the erroneous step as detailed below:
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