## Tal_Tal one year ago Match each statement (term) with its value in relation to 0 (definition). A building is 38 feet tall. The scuba diver was 38 feet below sea level. The basement is 8.3 feet below ground. Oliver owes his sister \$27. Erica jumped 2.7 feet above ground.

1. Tal_Tal

Here are the choices

2. Tal_Tal

A) 2.7 B) −38 C) –8.3 D) –27 E) 38

3. Tal_Tal

Sorry I'm bad at this lol :)

4. mathstudent55

Use positive numbers for tall, and above ground. Use negative numbers for money owed, below ground, and below sea level.

5. Tal_Tal

Oh I get it now!! Thank you so much!

6. mathstudent55

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7. mathstudent55

Look at the figure above. Think of ground level as being zero on a vertical (up and down) number line. Anything above ground is a positive number. Anything below ground is a negative number.

8. mathstudent55

The same is true fro sea level. Sea level is zero on a vertical number line. The sail of a boat that is 20 ft above sea level is represented by 20 ft. A scuba diver who dives to a depth of 38 ft below sea level is at -38 ft.

9. mathstudent55

You can also use positive and negative amounts to represent money. Money you have is positive. Money you owe is negative. For example, in one pocket you have \$5. In your other pocket you have \$7. In your piggy bank you have \$12. You owe your friend \$3. How much total money do you really have? Add all the amounts, but call the amounts you own positive and the amount you owe negative. Amounts you have: \$5, \$7, \$12 Amount you owe: -\$3 Now add all the amounts (being careful with positive and negative signs): \$5 + \$7 + \$12 + (-\$3) = \$5 + \$7 + \$12 - \$3 = \$24 - \$3 = \$21