Question

Write an inequality for the sentence. Use x for the variable.
The sum of a number and 12 is at least 25.

Answer 1

What? I'm confused... -_-

Answer 2

ok so lets replace the sum of a number with x

Answer 3

Ok...

Answer 4

now it says x AND 12 is atleast 25

Answer 5

how do you think you could show that?

Answer 6

Ok. So what do you replace and with?

Answer 7

if i say to you 2 and 2 is 4

Answer 8

what do you think and is replaces by?

Answer 9

*replaced

Answer 10

Addition sign

Answer 11

good :)

Answer 12

so what do you think the inequality look like?

Answer 13

x+12 = 25 ? I'm not sure about the left side of this.

Answer 14

Because what is 'at least' supposed to mean?

Answer 15

at least means equal to or greater than

Answer 16

Oh ok. So it's not an equal sign?

Answer 17

so if i say x + 12 is atleast 4

it means 12 is either equal to 4 or larger then 4

Answer 18

no its one of the inequality signs i'll let you decide which one

Answer 19

Ok. So it's: \[x+12\le 4\]

Answer 20

if i put

2 < 4

what do you think that means

Answer 21

2 is less than 4

Answer 22

great

Answer 23

So did I get it right?

Answer 24

but x + 12 is equal to or LARGER than 4

Answer 25

Oh! I thought you said it's not equal to or larger. So it would be: \[x+12\ge4\]

Answer 26

well done

Answer 27

:D

Answer 28

Whoa I just realized that we started using 4 instead of 25...
So I think we need to re work it cause we got a little messed up there...

Answer 29

ye sorry i didnt spot that mistake so just replace 4 by 25

Answer 30

and then solve according to the method i showed you in the previous post

Answer 31

Ok. thanks. I'm posting another question so you can help me. :D

Answer 32

what answer did you get for that one?

Answer 33

\[x+12\ge25\]