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Chapter 1: Q20. (page 30)

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

2-b

Short Answer

Expert verified

The absolute value of expression is4.

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 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

2-b=2-6=-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

Write expressions having values from one to ten using exactly four 4s. You may use any combination of the operation symbols +,-,×,÷,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

Determine which expression below represents the amount of change someone would receive from a \(50bill if they purchased 2 children’s ticket at \)4.25each and 3 adult ticket at $7each at a movie theatre. Explain.

a.50−2×4.25+3×7b.50−2×4.25+3×7c.50−2×4.25+3×7d.50−2×4.25+3×7

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

2z-15x3y

Name the property illustrated by each equation.

28. 5a+-5a=0

Evaluate each expression if x=4,y=−2,and z=6

x+y-13
See all solutions

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