Add: 5(0.5k−1)+2(0.4−k). Answer should be in decimal form please

3 answers

To add the expression \(5(0.5k - 1) + 2(0.4 - k)\), we will first distribute the constants inside the parentheses:

  1. Distributing \(5\) in the first term: \[ 5(0.5k) - 5(1) = 2.5k - 5 \]

  2. Distributing \(2\) in the second term: \[ 2(0.4) - 2(k) = 0.8 - 2k \]

Now we can combine these results: \[ (2.5k - 5) + (0.8 - 2k) \]

Now, combine like terms:

  1. Combine the \(k\) terms: \[ 2.5k - 2k = 0.5k \]

  2. Combine the constant terms: \[ -5 + 0.8 = -4.2 \]

Putting it all together: \[ 0.5k - 4.2 \]

Therefore, the final answer is: \[ 0.5k - 4.2 \]

ok thanks thats what i got

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