Ask a New Question
Menu

The stem-and-leaf plot shows the speeds of the fastest steel roller coasters in Europe. The table shows the speeds of the fastest steel roller coasters in North America.

Speeds of the Fastest Steel Roller Coasters in Europe (in miles per hour)

This stem-and-leaf plot represents the speeds of the fastest steel roller coasters in Europe, where the stem indicates the tens digit and the leaf represents the ones digit.
Stem Leaf
7 4 5 5 5
8 0 0 3 4 8
9 9
11 1Key: 7|4=74 miles per hour

Speeds of the Fastest Steel Roller Coasters in North America (in miles per hour)

This table displays the speeds of the fastest steel roller coasters in North America, categorized by country. The values represent speeds in miles per hour.
Canada 90 128 91
U.S. 93 120 100
Mexico 95 92 85
Find the range of the speeds of the fastest steel roller coasters on both continents.

(1 point)
The range of the speeds of the fastest steel roller coasters in Europe is
mph. The range of the speeds of the fastest steel roller coasters in North America is
mph.
Skip to navigation

1 answer

To find the range of the speeds of the fastest steel roller coasters, we first need to determine the maximum and minimum speeds for both Europe and North America.

Speeds of the Fastest Steel Roller Coasters in Europe

From the stem-and-leaf plot:

  • The speeds are:
    • 74, 75, 75, 75 (from the stem 7)
    • 80, 80, 83, 84, 88 (from the stem 8)
    • 99 (from the stem 9)
    • 111 (from the stem 11)
  1. Minimum speed: 74 mph
  2. Maximum speed: 111 mph

Range in Europe: \[ \text{Range} = \text{Maximum} - \text{Minimum} = 111 - 74 = 37 \text{ mph} \]

Speeds of the Fastest Steel Roller Coasters in North America

From the table:

  • Canada: 90, 128, 91
  • U.S.: 93, 120, 100
  • Mexico: 95, 92, 85
  1. Minimum speed: 85 mph
  2. Maximum speed: 128 mph

Range in North America: \[ \text{Range} = \text{Maximum} - \text{Minimum} = 128 - 85 = 43 \text{ mph} \]

Summary of Results

  • The range of the speeds of the fastest steel roller coasters in Europe is 37 mph.
  • The range of the speeds of the fastest steel roller coasters in North America is 43 mph.