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Big Ideas Math: Modeling Real Life, Grade 7

BI

Big Ideas Math: Modeling Real Life, Grade 7 View details

Cumulative Practice

Finish the assignment

Exercise 6 Page 178

Substitute the given values in the expression.

B

We are given an expression and asked to evaluate it for some given values. Let's look at the expression! x^2-3y/z To evaluate the given expression for x= - 5, y= 3, and z= - 1, we should substitute these values into the expression and simplify as much as possible.

x^2-3y/z

SubstituteValues

Substitute values

( - 5)^2-3( 3)/- 1

Calculate power

25-3(3)/- 1

Multiply

25-9/- 1

Subtract term

16/- 1

MoveNegDenomToFrac

Put minus sign in front of fraction

- 16/1

a/1=a

- 16

This result corresponds to answer B.

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Exercises