Is Joey's work correct? No, Joey made a mistake going from the given expression to Step 1. Joey should have multiplied 2 and 3 instead of evaluating exponents. The order of operations says to multiply before you evaluate exponents. No, Joey made a mistake going from Step 4 to Step 5. Joey should have subtracted 3 from 97 before adding. The order of operations says to add and subtract from left to right. Yes, Joey's work is correct.

Is Joey's work correct? No, Joey made a mistake going from the given expression to Step 1. Joey should have multiplied 2 and 3 instead of evaluating exponents. The order of operations says to multiply before you evaluate exponents. No, Joey made a mistake going from Step 4 to Step 5. Joey should have subtracted 3 from 97 before adding. The order of operations says to add and subtract from left to right. Yes, Joey's work is correct.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Concept explainers

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.

Question

O0 * 41) 57%
ID X
A ixl.com/math/grade-6/identify-mistakes-involving-the-order-of-operations
Joey tried to evaluate an expression. Here is his work:
97 - 3 + 5° ÷ 25 · 2.3?
= 97 3 + 125 ÷ 25 · 2.9
Step 1
= 97 – 3 + 5 2.9
Step 2
= 97 - 3 + 10-9
Step 3
= 97 3 +90
Step 4
= 97 - 93
Step 5
= 4
Step 6
Is Joey's work correct?
No, Joey made a mistake going from the given expression to Step 1. Joey
should have multiplied 2 and 3 instead of evaluating exponents. The order of
operations says to multiply before you evaluate exponents.
No, Joey made a mistake going from Step 4 to Step 5. Joey should have
subtracted 3 from 97 before adding. The order of operations says to add and
subtract from left to right.
Yes, Joey's work is correct.
MacBook Pro
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