help_people one year ago An inequality is shown below: -np - 5 ≤ 4(c - 2) Which of the following solves for n? n ≥ - the quantity 4 times c minus 3 all over p n ≥ - the quantity 4 times c minus 13 all over p n ≤ - the quantity 4 times c minus 3 all over p n ≤ - the quantity 4 times c minus 13 all over p

1. help_people

@welshfella

2. Nnesha

first of all distribute parentheses by outside term

3. help_people

so -np-5<=4x-8

4. amoodarya

-np - 5 ≤ 4(c - 2) np+5

5. Nnesha

alright yes that's right you have to isolate n so move -5 to the right side and remember when you MULTIPLY or DIVIDE by negative number then you should flip the inequality sign

6. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @help_people so -np-5<=4x-8 $$\color{blue}{\text{End of Quote}}$$ 4c*

7. amoodarya

np +5 >=- 4(c - 2) np >= -4c +8-5 np> = -4c+3

8. help_people

ok

9. help_people

why do i do after?

10. amoodarya

divide by p

11. help_people

np/p=-4c+3/p n>=4c-3/p

12. anonymous

-np - 5 ≤ 4(c - 2) -np - 5 ≤ 4c - 8 adding +5 for both sides -np=<4c-8+5 -np=< 4c-3 multiply by (-1) np >=-4c+3

13. help_people

based on that a is the answer?

14. Nnesha

based on what ? $\rm n \ge \frac{ -4c \color{reD}{+}3 }{ p }$ n ≥ - the quantity 4 times c **minus** 3 all over p

15. Nnesha

or you can write it as $\rm n \ge \frac{ 3 -4c }{ p }$ but still 3 is positive take a screenshot

16. help_people

well none of this options have that so a right?

17. Nnesha

a is incorrect but bec none of options are right so yeah a.......:/

18. Nnesha

n ≥ - the quantity 4 times c minus 3 all over p $\rm n \ge \frac{ -4c \color{reD}{-}3 }{ p }$ $\rm n \ge \frac{ \color{reD}{-} (4c \color{reD}{+}3) }{ p }$ negative sign is common so take it out mhm

19. Nnesha

if we do backwards then that^^ makes sense

20. help_people

ok just to claify because i do not want to get it wrong a is correct

21. help_people

@nn

22. Nnesha

i guess YES

23. help_people

ok may you help w. another ?

24. Nnesha

i'll try

25. help_people

ok

26. help_people

Which equation is not equivalent to the formula e = mc? m equals e over c c equals e over m e = cm m equals c over e

27. help_people

i think its d @Nnesha

28. Nnesha

how ? can you explain a littlebit ?

29. Nnesha

:-)

30. help_people

well sure i solve for m and c idk about the e=cm but that leaves us with m=c/e

31. Nnesha

solve for e m =c/e

32. Nnesha

yes that's right m = c/e equal to em =c which is not equivalent to e =mc

33. help_people

wait so d is right??

34. help_people

it is not equally to e=mc because what u said before confused me :D

35. Nnesha

ye d is right

36. Nnesha

equation is e = mc m TIMES c and D is m = c/e which is em = c solve for e you will get e = m/c m OVER c