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mafiozo [28]
3 years ago
14

Which expressions are equivalent to -2.5(1 -2n) - 1.5n ?

Mathematics
1 answer:
Maslowich3 years ago
3 0
Distribute then add a(b-c)=ab-ac -2.5(1 -2n) - 1.5n -2.5(1-2n)= -2.5-(-5n)=-2.5+5n now add the other bit -2.5+5n-1.5n -2.5+3.5n B is a corect answer find others distribute and add last 2 choices D=-2.5-3.5n E=-2.5+3.5n E is correc t answers to pick are B and E
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The amount that two groups of students spent on snacks in one day is shown in the dot plots below. Which statements about the me
RUDIKE [14]

Answer:

  • The mean for Group A is less than the mean for Group B.
  • The median for Group A is less than the median for Group B.
  • The mode for Group A is less than the mode for Group B.

Step-by-step explanation:

First, we can find the measures of center for each group.

<u>Group A</u>

Mode: 1

Median: (1 + 2) / 2 = 3 / 2 = 1.5

Mean: (1 * 5 + 2 * 4 + 3) / 10 = (5 + 8 + 3) / 10 = 16 / 10 = 1.6

<u>Group B</u>

Mode: 3

Median: 92 + 3) / 2 = 5 / 2 = 2.5

Mean: (1 * 3 + 2 * 2 + 3 * 4 + 5) / 10 = (3 + 4 + 12 + 5) / 10 = 24 / 10 = 2.4

From here, we can see that...

  • The mean for Group A is less than the mean for Group B.
  • The median for Group A is less than the median for Group B.
  • The mode for Group A is less than the mode for Group B.

Hope this helps!

8 0
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