anonymous one year ago Identify square root of 2 as either rational or irrational, and approximate to the tenths place.

1. anonymous

i got it

2. zzr0ck3r

The square root of a prime number is irrational. Go to wolframalpha.com and type sqrt{2} for an approximation

3. anonymous

irrational 1.4

4. zzr0ck3r

correct

5. anonymous

can i ask u another question?

6. zzr0ck3r

sure

7. anonymous

Solve x3 = 1 over 8. 1 over 2 ±1 over 2 1 over 4 ±1 over 4

8. zzr0ck3r

$$x^3=\dfrac{1}{8}\implies x=\sqrt[3]{\dfrac{1}{8}}\implies x=\dfrac{\sqrt[3]{1}}{\sqrt[3]{8}}\implies x=\dfrac{1}{\sqrt[3]{8}}= \ ?$$

9. anonymous

im confuzed

10. zzr0ck3r

Which step?

11. anonymous

2nd one

12. zzr0ck3r

1) I took the cube root of both sides which gives just $$x$$ on the left and the cube root of the fraction on the right 2) the cube root of a fraction is the cube root of the numerator over the cube root of the denominator. 3) the cube root of $$1$$ is $$1$$. 4) what is the cube root of $$8$$?

13. anonymous

2.82

14. anonymous

is it C?

15. zzr0ck3r

what number times itself 3 times equals 8?

16. anonymous

2

17. zzr0ck3r

so $$x=\dfrac{1}{2}$$

18. anonymous

ok

19. anonymous

WaiT!!!!! @zzr0ck3r

20. anonymous

is it C or D im confussled

21. anonymous

i mean A OR B