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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 21 Page 7

Substitute - 4 for a, - 0.8 for b, 5 for c, and 15 for d.

- 20

Practice makes perfect

To evaluate the given expression for a = - 4, b = - 0.8, c= 5, and d= 15, we should substitute these values into the expression and simplify as much as possible.

b^2c^2/ad

SubstituteValues

Substitute values

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

CalcPow

Calculate power

(0.64)(25)/(- 4)( 15)

Multiply

16/(- 4)( 15)

WriteDec

Write as a decimal

16/(- 4)(0.2)