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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

−|18−5c|=−|18−5×2.8|=−|18−14|=−|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

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

Find the value of each expression

15−2081÷925

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

w+x+z

Evaluate each expression ifw=6,x=0.4,y=12, andz=-3

39.w+12÷z

Find the value of each expression

23.4+64÷8×4÷2
See all solutions

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