Evaluate the expression 2l + 2w for l = 5.7 and w = 6.2.
The correct answer and explanation is:
To evaluate the expression 2l+2w2l + 2w when l=5.7l = 5.7 and w=6.2w = 6.2, follow these steps:
Step 1: Substitute the values of ll and ww
We are given that l=5.7l = 5.7 and w=6.2w = 6.2. Substitute these values into the expression: 2l+2w=2(5.7)+2(6.2)2l + 2w = 2(5.7) + 2(6.2)
Step 2: Multiply the constants by the values of ll and ww
Now multiply the constants (2) by each of the values: 2(5.7)=11.42(5.7) = 11.4 2(6.2)=12.42(6.2) = 12.4
Step 3: Add the results
Now add the two results from Step 2: 11.4+12.4=23.811.4 + 12.4 = 23.8
Final Answer:
The value of the expression 2l+2w2l + 2w when l=5.7l = 5.7 and w=6.2w = 6.2 is 23.823.8.
Explanation:
This expression represents a simple linear equation where you are multiplying each variable by 2 and then adding the results. The process involves substituting the given values of ll and ww into the equation, performing multiplication for each term, and then summing the results. The final value 23.823.8 is the result of the expression after following these basic arithmetic steps.