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Chapter 1: Q23. (page 30)

Evaluate each expression if a=-5,b=6 and c=2.8

-18-5c

Short Answer

Expert verified

The absolute value of expression is -4.

Step by step solution

01

Step1- Order of evaluation

To evaluate any expression involving one operation, follow the below order of operation

  • First replace the algebraic expression inside the grouping symbols like matrix brackets () with numeric expression
  • Perform the multiplication inside the bracket
  • Perform the subtraction inside the bracket
  • Evaluate the absolute value
02

Step2- Simplify the expression inside grouping symbol

To evaluate the value of given expression , simply the expression inside the bracket and then find the absolute value of expression as shown below

鈭�|18鈭�5c|=鈭�|18鈭�5脳2.8|=鈭�|18鈭�14|=鈭�|4|

03

Step3- Find the absolute value of expression inside the bracket

The absolute value of -4=-4.

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Most popular questions from this chapter

Name the sets of numbers to which each number belongs.

25. 122

Evaluate each expression if w=6,x=0.4,y=12,and z=-3

w-3x+y

Write expressions having values from one to ten using exactly four 4s. You may use any combination of the operation symbols +,-,脳,梅,and/or grouping symbols, but no other numbers are allowed. An example of such an expression with a value of zero is 4+4-4+4

Find the value of each expression

15鈭�2081梅925

Simplify each expression

35c+4d+6d-2c
See all solutions

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