Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 1: Q11. (page 57)

What is the value of the expression x+y2whenx=3andy=5?

Short Answer

Expert verified

The value of the expression is28.

Step by step solution

01

Step-1 – Order of operations

To evaluate any expression involving more than one operation, follow the below order of operations:

  • First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

Step-2 – Evaluate the exponent

To evaluate the given expression x+y2, substitute 3 for x and 5 for y in the given expression and simplify further by expanding the exponent as shown below

x+y2=3+52=3+25

03

Step-3 – Add the numbers

Now to simplify further, add the resulting number with the last number to get

x+y2=3+52=3+25=28

Thus, the value of the expression is 28.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

DVD Rentals You belong to an online DVD rental service. Your yearly rental budget is \(200. Each rental costs \)4.

a. Copy and complete the table.

b. Write a variable expression for the cost of r rentals.

c. Write a variable expression for the amount of your budget left after r rentals.

d. Writing How many DVDs will you be able to rent before the $200 is spent? Explain how you found your answer.

Challenge The plastic tips on the ends of a shoelace are called aglets. Suppose a sneaker factory produces p pairs of shoes each hour and is in operation for h hours each day. Write a variable expression for the number of single aglets the factory uses each day. Evaluate the expression when p=200andh=20. Explain what your answer means.

Evaluate the experssion when x=6andy=12

localid="1647946456351"  9-x

Multiple Choice Write a variable expression for a length of time in minutes if you know the number s of seconds

a.s+60b.s60c.60sd.60s

Evaluate the experssion when a=4, b=2,andc=16

localid="1647950276574" ab
See all solutions

Recommended explanations on Math Textbooks

Probability and Statistics

Read Explanation

Decision Maths

Read Explanation

Statistics

Read Explanation

Applied Mathematics

Read Explanation

Mechanics Maths

Read Explanation

Pure Maths

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free