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rewona [7]
4 years ago
9

The solution is n = –2 verified as a solution to the equation 1.4n + 2 = 2n + 3.2. What is the last line of the justification?

Mathematics
1 answer:
svlad2 [7]4 years ago
4 0
Solve:
1.4n + 2 = 2n + 3.2

Group like terms and change its corresponding signs.
1.4n - 2n = 3.2 - 2

Simplify each term:
-0.6n       = 1.2

Find n by dividing each side with -0.6
-0.6n/-0.6 = 1.2 / -0.6
             n = -2

The last line of the justification is the division -0.6n and 1.2 by -0.6.

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The amount of money Kyle paid is $25.

<h3>Determine the price of nachos and chocolates </h3>

Two simultaneous equations can be derived from the question:

3n + 3c = $45 equation 1

n = 2c equation 2

Where:

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In order to determine the price of chocolates, please substitute for n in equation 1.

3(2c) + 3c = $45

6c + 3c = $45

9c = $45

c = $45/9 = $5

In order to determine the price of nachos, please substitute for c in equation 2:

n = 2($5)

n = $10

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To learn more about simultaneous equations, please check: brainly.com/question/25875552

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frosja888 [35]

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Answer:

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Step-by-step explanation:

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This means that they will complete the task in 40/13 hours

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This means that the part left to complete will be:

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