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anonymous

  • one year ago

Please I only want help, no answers. The elevation of city A is 96 feet below sea level; the elevation of city C is 24 feet below sea level. The elevation of city D is 1/4 of the elevation of city C. Part A: Write an expression to represent the elevation, in feet, of city D. Part B: Solve the expression and explain why the answer is negative or positive.

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  1. anonymous
    • one year ago
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    @pooja195?

  2. anonymous
    • one year ago
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    @Preetha? @dan815?

  3. anonymous
    • one year ago
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    @jlrutherf?

  4. skullpatrol
    • one year ago
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    Any ideas?

  5. anonymous
    • one year ago
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    well do you do 24 - 1/4?

  6. skullpatrol
    • one year ago
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    Nope, first you need to assign values for each city's elevation.

  7. anonymous
    • one year ago
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    What do you mean by values?

  8. skullpatrol
    • one year ago
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    What does it mean for a city to be 24 feet below sea level?

  9. anonymous
    • one year ago
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    -24

  10. skullpatrol
    • one year ago
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    Very good :-)

  11. anonymous
    • one year ago
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    and so A is -94 C is -24 so is D -1/4?

  12. skullpatrol
    • one year ago
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    D is not -1/4 because that would be 0.25 feet below sea level, right?

  13. anonymous
    • one year ago
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    ...idk but i disagree lol

  14. skullpatrol
    • one year ago
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    1/4 = 0.25

  15. anonymous
    • one year ago
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    I still dont know why it wouldnt be -1/4

  16. anonymous
    • one year ago
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    wait....they would all be positive if you divide or multiply right?

  17. skullpatrol
    • one year ago
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    Yes, but that is not what the question is asking for.

  18. anonymous
    • one year ago
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    ok but it is for part b

  19. anonymous
    • one year ago
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    So the expression would be D = -24 - 1/4?

  20. skullpatrol
    • one year ago
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    Nope. Let's reread the problem carefully AND think about its meaning

  21. anonymous
    • one year ago
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    i did like a 100 times ;(

  22. skullpatrol
    • one year ago
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    Please I only want help, no answers. The elevation of city A is 96 feet below sea level = -96; the elevation of city C is 24 feet below sea level = -24. The elevation of city D is 1/4 OF the elevation of city C. Of means multiply. Part A: Write an expression to represent the elevation, in feet, of city D. Part B: Solve the expression and explain why the answer is negative or positive.

  23. anonymous
    • one year ago
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    Ok well just to be clear are we adding?

  24. anonymous
    • one year ago
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    if we were would it be 24.25?

  25. skullpatrol
    • one year ago
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    I think you have your letters mixed up in copying the question down. Pease check them.

  26. anonymous
    • one year ago
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    Yea i just checked, i dont

  27. anonymous
    • one year ago
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    I will figure this out later. Can you plz check my work on another question? A jar contains 0.85 liter of strawberry juice and 0.50 liter of mango juice. Celina poured 0.15 liter of watermelon juice into the jar. She then drank 0.30 liter of the mixture. Part A: Write an expression to represent the total amount of juice left in the jar. (5 points) Part B: Identify which property is used in each step to simplify the expression This is my work: 0.85 = strawberry 0.50 = mango Added 0.15 of watermelon into the jar. Drank 0.30. Part A: Total = 1.5 Left = 1.2 The expression is J = (S + M) + (W - D) J = (.85 + .50) + ( .15 - .30) J = 1.2 liters Part B: The property being used is Associative.

  28. mathstudent55
    • one year ago
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    @beckyg111 This may help you understand what the first problem is asking. John dug a hole 12 feet deep. Bob dug a hole 1/4 the depth of John's hole. How deep is Bob's hole?

  29. skullpatrol
    • one year ago
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    The elevation of city A is 96 feet below sea level; the elevation of city C is 24 feet below sea level. The elevation of city D is 1/4 of the elevation of city C. Part A: Write an expression to represent the elevation, in feet, of city D. D = 0.25*C Answer Part B: Solve the expression and explain why the answer is negative or positive. D = 0.25*(-24) = -6 feet below sea level The answer is negative because it is below sea level. Answer

  30. anonymous
    • one year ago
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    @mathstudent55 would that be 3?

  31. anonymous
    • one year ago
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    @skullpatrol D = 1/16 ?

  32. skullpatrol
    • one year ago
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    D = -6

  33. mathstudent55
    • one year ago
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    Yes. How did you get 3? You get 3 by multiplying 12 ft by 1/4, which is the same as 12 ft * 0.25 It's the same in your problem. City C has an elevation of 24 ft below sea level. That elevation can be written as a negative number, -24 ft. City D has an elevation 1/4 of the elevation of city C, so city D's elevation is 1/4 * C Notice the operation is 1/4 * C. The elevation of D is not just 1/4. The elevation of city D is not simply -1/4 ft, or -0.25 ft. It is 1/4 * (-24 ft)

  34. anonymous
    • one year ago
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    Ok sooo multiplication was what i needed to do?

  35. mathstudent55
    • one year ago
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    1/4 * C = 1/4 * (-24 ft) = 0.25 * (-24 ft) = -6 ft The elevation of D is 6 ft below sea level.

  36. mathstudent55
    • one year ago
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    Correct. Just like in my example you multiplied 1/4 * 12 ft, here you multiply 1/4 * (-24 ft)

  37. anonymous
    • one year ago
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    ok that makes more sense

  38. skullpatrol
    • one year ago
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    1/4 OF means "multiply"

  39. mathstudent55
    • one year ago
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    If you read @skullpatrol 's responses, you'll see that is what he was trying to tell you.

  40. anonymous
    • one year ago
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    lol sorry

  41. mathstudent55
    • one year ago
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    Don't be sorry. Keep studying and asking questions. That's how you learn. I like your attitude that you don't want answers; you want to understand how to solve the problem.

  42. skullpatrol
    • one year ago
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    What does it mean for a city to be 24 feet below sea level?

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