Can someone please help me with PEMDAS?
4² + [15 ÷ 9 - 3(2)]
if you do parentheses first then 15 ÷ 9 doesn't make sense. So I did,
16 + 15 ÷ 3 = 21
Thank you!!
no, you have to do the division first, even though the devision is not exact.
4² + [15 ÷ 9 - 3(2)]
= 16 + [ 5/3 - 6]
= 16 + [-13/3]
= 35/3 or 11 2/3
http://www.wolframalpha.com/input/?i=4%C2%B2+%2B+%5B15+%C3%B7+9+-+3%282%29%5D+
You're almost there! However, your solution is not entirely correct. Let's break it down step by step using the PEMDAS order of operations:
P - Parentheses
E - Exponents
M/D - Multiplication and Division (from left to right)
A/S - Addition and Subtraction (from left to right)
The expression you provided is:
4² + [15 ÷ 9 - 3(2)]
First, we address the expression inside the square brackets:
15 ÷ 9 = 1.6667 (rounded to four decimal places)
Next, we evaluate the multiplication inside the parentheses:
3(2) = 6
Now, we substitute the results back into the original expression:
4² + [1.6667 - 6]
Next, we evaluate the expression inside the square brackets:
1.6667 - 6 = -4.3333 (rounded to four decimal places)
Finally, we substitute the new result back into the original expression:
4² + (-4.3333)
Now we compute the exponents:
4² = 16
Finally, we perform the addition:
16 + (-4.3333) = 11.6667 (rounded to four decimal places)
So, the correct answer is approximately 11.6667.