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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 23 Page 7

Substitute - 4 for a, - 0.8 for b, and 15 for d.

3.71

Practice makes perfect

To evaluate the given expression for a = - 4, b = - 0.8, and d= 15, we should substitute these values into the expression and simplify as much as possible.

5(d+a)/2ab^2

SubstituteValues

Substitute values

5( 15+( - 4))/2( - 4)(- 0.8)^2

WriteDec

Write as a decimal

5(0.2+(- 4))/2(- 4)(- 0.8)^2

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Simplify

AddNeg

a+(- b)=a-b

5(- 3.8)/2(- 4)(- 0.8)^2