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Question 1: What is the cube root of -64?

Question 1: What is the cube root of -64?. 4 -4 8 -8 Go to question2. YES! That’s right!. (-4) × (-4) × (-4) = -64 Therefore the cube root of -64 = - 4 BACK. Oops ... that was not the right answer. Try again!. BACK. Oops ... that was not the right answer. Try again!.

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Question 1: What is the cube root of -64?

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  1. Question 1:What is the cube root of -64? 4 -4 8 -8 Go to question2

  2. YES! That’s right! (-4) × (-4) × (-4) = -64Therefore the cube root of -64 = -4 BACK

  3. Oops ... that was not the right answer.Try again! BACK

  4. Oops ... that was not the right answer.Try again! (4) × (4) × (4) = 64Therefore 4 is NOT the cube root of -64! BACK

  5. Oops ... that was not the right answer.Try again! 8 is the SQUARE ROOT of 64! So this is not the correct answer since question is cube root of -64. BACK

  6. Oops ... that was not the right answer.Try again! BACK

  7. Question 2: Between which of the following pairs of numbers does the cube root of 20 lie? • Between 2.5 and 2.6 • Between 2.6 and 2.7 • Between 2.7 and 2.8 • Between 2.8 and 2.9

  8. YES! That’s right! 2.7³ = 2.7 × 2.7 × 2.7 = 19.6832.8³ = 2.8 × 2.8 × 2.8 = 21.95219.683 < 20 < 21.952So the cube root of 20 must be between 2.7 and 2.8 BACK

  9. Oops ... that was not the right answer.Try again! BACK

  10. Oops ... that was not the right answer.Try again! 2.5³ = 2.5 × 2.5 × 2.5 = 15.6252.6³ = 2.6 × 2.6 × 2.6 = 17.576Both 15.625 and 17.576 are smaller than 20! So this is not the correct answer! BACK

  11. Oops ... that was not the right answer.Try again! BACK

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