31.4+3x2-5 Using the order of operations, simplify the expression above. Which of the following is correct?
A. -21
B. -5
C. 5
D. 9
Two problems:
(1) no value given for x
(2) I suspect a typo, since there is no "x" term, and two constants.
I assume that x means multiplication in this problem. 10 - 5 = 5
To simplify the expression using the order of operations (also known as PEMDAS), follow these steps:
1. Start by calculating the multiplication: 3 x 2 = 6.
2. Substitute the new value: 31.4 + 6 - 5.
3. Next, perform the addition: 31.4 + 6 = 37.4.
4. Finally, perform the subtraction: 37.4 - 5 = 32.4.
Therefore, none of the given options (A, B, C, or D) is the correct answer. The correct simplified expression is 32.4.
To simplify the expression 31.4 + 3 × 2 - 5 using the order of operations (also known as PEMDAS), follow these steps:
1. Multiply: 3 × 2 = 6
2. Add: 31.4 + 6 = 37.4
3. Subtract: 37.4 - 5 = 32.4
So, the correct answer is not listed among the options you provided.