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Q48.

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Pre-algebra

Found in: Page 7

Book edition Common Core Edition

Author(s) Ron Larson, Laurie Boswell, Timothy D. Kanold, Lee Stiff

Pages 183 pages

ISBN 9780547587776

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Short Answer

Evaluate the experssion when $a = 2.5, b = 15, and c = 3.5$
localid="1648024501617" $a c$

The value of the expression is $8.75$ .

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step-1 – Apply the concept of product

When two or more numbers are multiplied together, it gives a number. The numbers that are being multiplied are called the factors. And the result of the multiplication of numbers is called the product of those numbers.

Step-2 – Example for the product

In the product $2 \cdot 3 \cdot 4 = 24$ , the numbers 2, 3, and 4 are being multiplied to give the product 24. So, the numbers 2, 3, and 4 are the factors in this equation and 24 is the product of the numbers.

Step-3 – Evaluate the value of expression

To evaluate the expression $a c$ , substitute the values of a as 2.5 and value of c as 3.5 and multiply the numbers.

To find the product of the decimal numbers 2.5 and 3.5, first multiply the numbers normally without decimal point. Observe that the first number has one decimal and the second number has one digit after decimal as well, so place the decimal point in the final product at the left of last two digits from right end.

The product of the numbers can be computed as shown below,

$\begin{array}{l} 2.5 \\ \underline{\times 3.5} \\ 125 \\ \underline{75 \times} \\ 8.75 \end{array}$

Thus, the value of the expression is $8.75$ .

Most popular questions for Math Textbooks

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.

Evaluate the experssion when $m = 5 and n = 6$

localid="1647947857253" $m n$

Find the sum or difference.

$5.1 + 6.8$

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An astronaut in orbit circles Earth every 90 minutes and sees 16 sunrises each day. Let d be the number of days an astronaut is in orbit. Write a variable expression for the number of sunrises seen in d days.
Identify the value of d for Walz’s and Bursch’s 2002 space flight.
Find the number of sunrises Walz and Bursch saw

Evaluate the experssion when $a = 4, b = 2, and c = 16$

localid="1647950249864" $a b$

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