Question

Please help me.. I'm really confused. /:

Answer 1

I've already got part A...
A = 9(x+23)/2
2A = 9(x+23)
2A/9 = (x+23)
2A/9 - 23 = x
x = 2A/9 - 23

Answer 2

But I need help on the other 2.

Answer 3

ok so take the equation that is had from part a, and instead of the variable, substitute it 108 then solve, u get it now?

Answer 4

so plug 108 for a

Answer 5

the solve for x

Answer 6

ok just a sec

Answer 7

u need help?

Answer 8

the equation is x=2a/9-23
so 2x108=216
216/9=24
24-23=1
x=1

Answer 9

So is it this?

108 = 9/2(x+23)
108 = 9(x+23)/2
216 = 9(x+23)
216/9 = x + 23
24 = x+23
24 - 23 = x
1 = x
x = 1

Answer 10

yes great!

Answer 11

u need help on part c?

Answer 12

Yay! (: Yea, if you don't mind.

Answer 13

ok for part c

Answer 14

ok so we need to solve for n, this means we need to set an equation that solves for n
so what we need to do is isolate the variable "n" so your steps are

Answer 15

–np – 90 > 30 first add 90 to both sides
-np>120 then you want to divide by p
-n>120/p then finally u have to divide by -1 since there is an invisible 1 next to the p and we need to get rid of that negative
n>-120/p is your final answer!

Answer 16

I was taught that if you divided by a negative, the sign was flipped. Am I confused about that?

Answer 17

yes whenever u divide anything my a negative it becomes the oposite sign, youre correc about that!

Answer 18

by*

Answer 19

So should the sign be flipped at the end in this?

Answer 20

yes the answer is a negative fraction which is -120/p

Answer 21

Oh ok. Thank you so much for the help! (:

Answer 22

np, wheneever u have a question, just tag me! id love to help

Answer 23

Thanks, I will if i need help.