You would like the following expression 3+2[Fill in the blank]
4/(7-5)^2 to evaluate to 5 when run in R. Enter an appropriate mathematical operator to make the expression to evaluate to 5.

Question

You would like the following expression 3+2[Fill in the blank]
4/(7-5)^2 to evaluate to 5 when run in R. Enter an appropriate mathematical operator to make the expression to evaluate to 5.

BlackTom AI · Accepted Answer

Parsing the task, we are asked to insert a mathematical operator into the expression 3+2[Fill in the blank]4/(7-5)^2 so that it evaluates to 5 in R.
First, compute the part that is already fixed: (7-5) equals 2, and then (7-5)^2 equals 4.
Thus the expression becomes 3 + 2 [operator] 4 / 4.
Next, simplify the right-hand side: 4/4 equals 1, so the expression reduces to 3 + 2 [operator] 1.
To reach a total of 5, we need 3 plus something to equal 5, which requires that 2 [operator] 1 equals 2. 
Consider potential operators:
- If the operator is '+', then 2 + 1 = 3, giving 3 + 3 = 6, which is too large.
- If the operator is '-', then 2 - 1 = 1, giving 3 + 1 = 4, which is too small.
- If the operator is '*', then 2 * 1 = 2, giving 3 + 2 = 5, which matches the target.
- If the operator is '/', then 2 / 1 = 2, again giving 5 when added to 3, which also matches the target; however, we must be careful: 2 / 1 = 2 is mathematically equivalent to the multiplication in this particular numeric setup, but since the instruction asks for a single appropriate operator, multiplication '*' is the conventional choice that preserves standard operator precedence and is unambiguous in this context.
Given these checks, the operator '*' correctly yields 2 [operator] 1 = 2, producing 3 + 2 = 5, which satisfies the requirement.
Note: The problem statement asks for “an appropriate mathematical operator,” and while division could also yield the same sum in this specific numeric arrangement, '*' is the most straightforward and conventional choice here, aligning with standard arithmetic precedence rules in R.

COMM_V 205 101 102 103 2025W1 In-class Exercise (ICE) 8

You would like the following expression 3+2[Fill in the blank] 4/(7-5)^2 to evaluate to 5 when run in R. Enter an appropriate mathematical operator to make the expression to evaluate to 5.

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COMM_V 205 101 102 103 2025W1 In-class Exercise (ICE) 8

You would like the following expression 3+2[Fill in the blank] 4/(7-5)^2 to evaluate to 5 when run in R. Enter an appropriate mathematical operator to make the expression to evaluate to 5.

View Explanation

Log in for full answers

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