example 2 standardized test practice solution =+

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EXAMPLE 2 Standardized Test Practice SOLUTION = +

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Page 1: EXAMPLE 2 Standardized Test Practice SOLUTION =+

EXAMPLE 2 Standardized Test Practice

SOLUTION

= +

Page 2: EXAMPLE 2 Standardized Test Practice SOLUTION =+

EXAMPLE 2 Standardized Test Practice

Find positive square root.

Substitute.

Multiply.

Subtract 16 from each side.

SOLUTION

Approximate with a calculator.

162 = 42 + x2

256 = 16 + x2

15.491 ≈ x

240 = x

240 = x2

ANSWER

The ladder is resting against the house at about 15.5 feet above the ground.

The correct answer is D.

Page 3: EXAMPLE 2 Standardized Test Practice SOLUTION =+

GUIDED PRACTICE for Example 2

The top of a ladder rests against a wall, 23 feet above the ground. The base of the ladder is 6 feet away from the wall. What is the length of the ladder?

3.

about 23.8 ftANSWER

Page 4: EXAMPLE 2 Standardized Test Practice SOLUTION =+

GUIDED PRACTICE for Example 2

The Pythagorean Theorem is only true for what type of triangle?

4.

right triangleANSWER