Question

What is the answer to b?

Answer 1

[See Below]

Step-by-step explanation:

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✦ To figure out the rule of this table you must Add, Subtract, Multiply, and Divide each line to find similarities.

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✧ Line 1:

• 
  `15+9=24`

• 
  `15-9=6`

• 
  `15*9=135`

• 
  `15` ÷
  `9=1.66r`

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✧ Line 2:

• 
  `20+12=32`

• 
  `20-12=8`

• 
  `20*12=240`

• 
  `20` ÷
  `12=1.66r`

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✧ Line 3:

• 
  `30+18=48`

• 
  `30-18=12`

• 
  `30*18=540`

• 
  `30` ÷
  `18=1.66r`

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✧ Line 4:

• 
  `50+30=80`

• 
  `50-30=20`

• 
  `50*30=1500`

• 
  `50` ÷
  `30=1.66r`

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So with this, we can conclude that each line has a similarity when we did:

• 
  `cm` ÷
  `g`

• 
  `=1.66r` (Repeating)

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So the weight per
`cm` is
`1.66` or
`g*1.66r`.

~Hope this helps Mate. If you need anything feel free to message me.

Answer 2

Answer: 0.6 grams per cm

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Step-by-step explanation:

Pick any column and divide the weight over the length

column 1: 9/15 = 0.6

column 2: 12/20 = 0.6

column 3: 18/30 = 0.6

column 4: 30/50 = 0.6

The weight per cm is 0.6 grams per cm

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Another way you could look at is like so

9 g = 15 cm

9/15 g = 15/15 cm

0.6 g = 1 cm

We divided both sides by 15 to turn "15 cm" into "1 cm". Think of "per cm" as "per 1 cm". This works for any other column as well.