Add: 5(0.5k−1)+2(0.4−k) . Answer should be in decimal form
To find the decimal form of the expression, we need to evaluate the expression by performing the operations.
5(0.5k - 1) + 2(0.4 - k)
= 5*0.5k - 5*1 + 2*0.4 - 2*-k
= 2.5k - 5 + 0.8 + 2k
Combining like terms, we have:
= 2.5k + 2k - 5 + 0.8
= 4.5k - 4.2
Thus, the decimal form of the expression 5(0.5k - 1) + 2(0.4 - k) is 4.5k - 4.2.
what is the answer
The answer is 4.5k - 4.2.
To find the sum:
5(0.5k−1) + 2(0.4−k)
We can start by distributing the coefficients to the terms within the parentheses:
= 5 * 0.5k − 5 * 1 + 2 * 0.4 − 2 * k
= 2.5k − 5 + 0.8 − 2k
Next, combine like terms (the terms with the same variable and exponent):
= (2.5k − 2k) + (−5 + 0.8)
= 0.5k − 4.2
Therefore, the answer, in decimal form, is 0.5k − 4.2.