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shepuryov [24]
2 years ago
13

Fifteen 7th graders were asked how many hours they spend doing homework each week and how many hours they spend watching televis

ion each week. the results are shown in the dot plots below

Mathematics
1 answer:
timama [110]2 years ago
3 0

Answer:

A.

  • 18 > 14, true

B.

  • 12 - 16 = -4, true

C.

<u>Mean:</u>

  • Homework = (4 + 6*2+10*3+12*2+14*4+16*2+18)/15 = 11.73
  • Television = (0 + 10*3+12*1+16*3+18*4+20*3)/15 = 14.8

<u>The difference:</u>

  • 14.8 - 11.73 > 1, NOT true

D.

  • True
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Step-by-step explanation:

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8 0
3 years ago
What is the speed of a bus that travels 250 km in 2 hours
Ber [7]
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Hope this helps:)
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3 years ago
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3 years ago
Serial numbers for a product are to be made using 2 letters followed by 3 digits the letters are to be taken from the first 6 le
kipiarov [429]

Answer:

Step-by-step explanation:

We have to make 5 place serial number with first two as alphabets and last three as digits.

The alphabets are bonded to first 6 ( A, B, C, D, E, F) where as digits are 10 (say 1 to 10).

Let the serial number be S1 S2 S3 S4 S5.

For Alphabets

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For Digits

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7 0
3 years ago
(8v^2+6v+5)+(9v^2+v+6)​
lisabon 2012 [21]

Answer:

= 17 v^2 + 7v + 11

Step-by-step explanation:

Given that:

= (8v^2+6v+5)+(9v^2+v+6)

by removing brackets

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Addin like terms:

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= 17 v^2 + 7v + 11

I hope it will help you!

4 0
3 years ago
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