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## the lab has a few materials: baking soda, vinegar, measuring cup, plastic syllable bag, a tablespoon, and a scale which one of these materia

Question

the lab has a few materials: baking soda, vinegar, measuring cup, plastic syllable bag, a tablespoon, and a scale which one of these materials would be most useful in determining the mass for before and after the reaction?

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Chemistry
3 years
2021-09-03T05:11:36+00:00
2021-09-03T05:11:36+00:00 2 Answers
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## Answers ( )

Answer:l = 14

Step-by-step explanation:

The perimeter of a rectangle is

P =2(l+w)

The width is x-6

w = x-6

The length is 8 units longer than the width

l = w+8

l = x-6+8

l = x+2

We can substitute this into the equation for Perimeter, which is given as 40

40 = 2(x+2 + x-6)

Combine like terms

40 =2 (2x-4)

Divide by 2

40/2 = 2/2 (2x-4)

20 = 2x-4

Add 4 to each side

20+4 =2x-4+4

24 = 2x

Divide by 2

24/2 =2x/2

12=x

We want to know the length

l = x+2

l =12+2

l = 14

Explanation:Answer:the plastic syllable

Explanation: