Question

Question 1 Unsaved Which equation has 5 as the value of k? Question 1 options: 2.4(k−1.3)=15.12 1.1k−1.8=7.3 1.4(0.7k+2)=2.1 1.8k+3.2=12.2

Answer 1

Option (1):

2.4 (k − 1.3 ) = 15.12

2.4k - 3.12 = 15.12

2.4k = 18.24

k = 7.6 ( ≠ 5, not the answer)

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Option (2):

1.1k − 1.8 = 7.3

1.1k = 9.1

k = 8.27 ( ≠ 5, not the answer)

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Option (3):

1.4(0.7k + 2) = 2.1

9.8k + 2.8 = 2.1

2.8k = -0.7

k = -4 ( ≠ 5, not the answer)

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Option (4):

1.8k + 3.2 = 12.2

1.8k = 9

k = 5 ( answer)

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Answer: 1.8k + 3.2 = 12.2 gives the value of k = 5

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