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alexandr402 [8]
3 years ago
15

The table shows the changes in the times (in seconds) of four teammates. What is the mean change? Write your answer as a decimal

. -2.43, -1.85, 0.61, -1.45
Mathematics
1 answer:
bekas [8.4K]3 years ago
8 0
I’m about to answer give me one sec
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I got the answer wrong but I need help
Natalka [10]

Answer:

The simplified version of 6/2 is 2squareroot of 2

Step-by-step explanation:

6 0
3 years ago
Joanne has 20 books on crafts and cooking. she has 6 more cookbooks than craft books. how many of each does she have?​
marin [14]

Answer:

Crafts books: 7

Cookbooks: 13

Step-by-step explanation:

Let x be the crafts book

Let y be the cookbooks

Solve for x:

  1. Plug x and y in: x + y = 20
  2. Re-write: y = x + 6
  3. Plug in x + 6 instead of y: x + x + 6 = 20
  4. Combine like terms: 2x + 6 = 20
  5. Subtract 6 from each side, so it now looks like this: 2x = 14
  6. Divide each side by 2 to cancel out the 2 next to x. It should now look like this: x = 7

Solve for y:

  1. Re-use an equation from above: y = x + 6
  2. Plug in the value of x: y = 7 + 6
  3. 7 + 6 = 13
  4. So, y = 13

I hope this helps!

5 0
4 years ago
Construct a frequency distribution and a frequency histogram for the data set using the indicated number of classes. Describe an
elena-s [515]

Answer and Explanation:

Number of classes = 8

    Highest value =2300

  Lowest value = 1250

Class width= highest value – lowest value / number of classes

               = 2300 – 1250/8

                = 131.25 = 132

So, we can write class as 1250+132=1382

Class                                        frequency

1250-1382                                 2

1382-1514                                 3

1514-1646                                 6

1646-1778                                 2

1778-1910                                 3

1910-2042                                 2

2042-2174                                 1

2174-2306                                 1

8 0
3 years ago
What is the value of a + bc when a = 7, b = 4, and c=1/2
Karo-lina-s [1.5K]

Answer:

9

Step-by-step explanation:

How I got my answer:

a+ bc turns into 7 + 4 x 1/2

First, you do 4 x 1/2 which equals 2 ( 4/1 x 1/2 = 2)

Then, you add 7 and 2

=9

4 0
3 years ago
A plumber had a pipe that was 2 yards long. He cut 18 inches off the end of the pipe. How many feet long was the pipe after the
GaryK [48]
2 yards = 6 feet
6 feet - 1.5 feet = 4.5 feet
The pipe was 4.5 feet long after being cut.
8 0
3 years ago
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