What is the best estimate for 3 + (-14.9)(-2.3)?
a 36 b 31 c 48 d 33
I came up with 36 but my teacher counted it wrong. I reworked it but still come up with A-36. What am I doing wrong?
15 * 2 = 30
30 + 3 = ?
Thanks Ms Sue! I see what I did wrong! Thanks!
You're welcome, Daniel. :-)
To evaluate the expression 3 + (-14.9)(-2.3), you need to follow a specific order of operations to get the correct answer.
First, it's important to understand that the order of operations is represented by the acronym PEMDAS, which stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).
Applying this to the given expression, we start by evaluating the multiplication operation inside the parentheses. Multiply -14.9 by -2.3, giving us a result of 34.27 (rounded to two decimal places).
Now we can rewrite the expression as 3 + 34.27. To simplify further, add 3 to 34.27, resulting in 37.27.
Therefore, the best estimate for 3 + (-14.9)(-2.3) is approximately 37.27.
Based on the options provided, it appears that the correct answer is not among them. It's possible that there was an error in the options given or a mistake in the question itself. I recommend double-checking with your teacher or discussing it with your classmates to clarify any confusion.