A 30-Ft Ladder Leaning Against a Wall Begins to Slide

question 158

Multiple Choice

A 30-ft ladder leaning against a wall begins to slide. How fast is the top of the ladder sliding down the wall at the instant of time when the bottom of the ladder is 18 ft from the wall and sliding away from the wall at the rate of 3 ft/sec? ​
Hint: Refer to the accompanying figure. By the Pythagorean theorem, . Find when x=18 and

a = 30; b = 3

• A) 4ft/sec
• B) ft/sec
• C) ft/sec
• D) 3 ft/ssec

Understand the responsibilities of corporate officers and accountants under federal securities laws.

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Recognize the effects of various drugs on the nervous system.

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Definitions:

Parental remarriage

The act of a parent getting married again after a divorce or the death of their spouse.

Remarriage

The act of getting married again after a divorce or the death of a spouse, often creating blended family structures.

Identities

The attributes, convictions, demeanor, appearance, and/or mannerisms that constitute an individual’s (personal identity) or collective’s (specific societal class or social group) essence.

Emotional remarriage

The act of developing a deep emotional connection and commitment with a new partner after the cessation of a previous marriage-like relationship.