Question 1 what is the cube root of 64
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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

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

4

-4

8

-8

Go to question2


Yes that s right

YES! That’s right!

(-4) × (-4) × (-4) = -64Therefore the cube root of -64 = -4

BACK



Oops that was not the right answer try again1

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

(4) × (4) × (4) = 64Therefore 4 is NOT the cube root of -64!

BACK


Oops that was not the right answer try again2
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.

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Question 2 between which of the following pairs of numbers does the cube root of 20 lie
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


Yes that s right1
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


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

BACK


Oops that was not the right answer try again3
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


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

BACK


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