## Tabbiejack Group Title what is the simplified form of the expression (b/7)^2 one year ago one year ago

1. Tabbiejack Group Title

|dw:1369532637410:dw|

2. Tabbiejack Group Title

@satellite73 I need help

3. Tabbiejack Group Title

4. Tabbiejack Group Title

The choices are|dw:1369532959983:dw|

5. JBrandonS Group Title

$(\frac{b}{7})^2 = \frac{b^2}{7^2} = \frac{b^2}{49}$

6. galacticwavesXX Group Title

B

7. galacticwavesXX Group Title

just square top and bottom on similar questions

8. Tabbiejack Group Title

Thanks so much I have 2 other questions if you guys don't mind

9. Tabbiejack Group Title

|dw:1369533436214:dw|

10. JBrandonS Group Title

Pull out the coefficients and use $x^ax^b=x^{a+b}$

11. Tabbiejack Group Title

I don't know this at all I am a parent trying to give my 2 children some math for the summer so I am asking for the help because I have not done algebra in 25 years

12. JBrandonS Group Title

Okay, well do you know what coefficients are?

13. Tabbiejack Group Title

yes

14. JBrandonS Group Title

Okay well then move those out so you get $2*3x^6x^{1/2}$ and use the above formula.

15. galacticwavesXX Group Title

the coefficients are the numbers in front of the variable whenever you are multiplying variables with powers you always must add the powers together

16. galacticwavesXX Group Title

what will the final answer be?

17. Tabbiejack Group Title

6x^3

18. Tabbiejack Group Title

$6x ^{3}$

19. JBrandonS Group Title

You need to add the powers, not multiply. so $6x^{6+1/2}$

20. Tabbiejack Group Title

ok so what is the answer

21. Tabbiejack Group Title

I will give you the choices

22. galacticwavesXX Group Title

the answer would be$6x^\frac{ 13 }{ 2 }$

23. JBrandonS Group Title

I have given you the answer, there is only one thing you need to do... Do you know how to add fractions with whole numbers?

24. galacticwavesXX Group Title

that is 6x^13/2

25. Tabbiejack Group Title

so its $5x \frac{ 13 }{2 }$

26. Tabbiejack Group Title

Guys I feel so old doing this

27. galacticwavesXX Group Title

all you need to do is add the powers which is 6+.5 and you get 6.5 which is 13/2 in fraction form so final answer would be 6x^13/2

28. Tabbiejack Group Title

the dean at my children school said they were cheating so I have to give this these math test so that can get ready to take the big test to passed algebra

29. Tabbiejack Group Title

this really means the world to me all the help from you guys

30. Tabbiejack Group Title

I have another if your up for it!

31. galacticwavesXX Group Title

bring it on

32. Tabbiejack Group Title

|dw:1369534461113:dw|

33. galacticwavesXX Group Title

on the top part is that C^9

34. Tabbiejack Group Title

yes

35. Tabbiejack Group Title

|dw:1369534620249:dw|

36. galacticwavesXX Group Title

ok so this expression can be re-written as $\frac{ x^9 }{ d^7 }/\frac{ x^14 }{ d^10 }$ which can be written as $\frac{ x^9 }{ d^7 }*\frac{ d^10 }{ x^14 }$ the equation software on here is complexed but that is d^10 and x^-14

37. Tabbiejack Group Title

that is not a choice

38. galacticwavesXX Group Title

now what we can do is simplify the expression easier this way and we do this by subtracting the powers of the variable x and subtract the powers of the variable d not finished yet

39. Tabbiejack Group Title

o sorry

40. galacticwavesXX Group Title

$\frac{ x^9 }{ x^14 }=\frac{ 1 }{ x^5 }$ andthe other one whic you get $\frac{ d^10 }{ d^7 }=d^3$ combine and you get $\frac{ d^3 }{ c^5 }$ sorry the x should have been a C

41. galacticwavesXX Group Title

if you can't see that it is d^3/c^5

42. Tabbiejack Group Title

This one I tried but I got it wrong is it B

43. Tabbiejack Group Title

are you guys still with me?

44. galacticwavesXX Group Title

yea my mom called for something but im back

45. Tabbiejack Group Title

Write the recursive formula for the geometric sequence. a1 = -2 a2 = 8 a3 = -32 A. an = -4 + an-1 B. an = -2 + an-1 C. an = -2 • an-1 D. an = -4 • an-1

46. Tabbiejack Group Title

do you want me to open this up in a new question so I can give you an award

47. galacticwavesXX Group Title

no im ok but i am looking at the sequences and none of them can i derive from the formulas given

48. galacticwavesXX Group Title

ohh never mind i got it the answer should be D

49. Tabbiejack Group Title

You rock

50. Tabbiejack Group Title

I am going to open up another question I want to give you an award for helping me

51. galacticwavesXX Group Title

haha thank you