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Mathematics 17 Online
OpenStudy (anonymous):

In the State of Florida, a redfish must be at least 18 inches long, but no more than 27 inches long for the fish to be considered a keeper. Choose the combined inequality that describes this scenario. 18 ≤ x ≤ 27 x≥ 18 and x ≥ 27 x ≤ 18 or x≥ 27 none of the above Some one please please please i will give you a mdeal please

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

you have flvs?(:

jimthompson5910 (jim_thompson5910):

"a redfish must be at least 18 inches long" translates to x >= 18 where x is the length

jimthompson5910 (jim_thompson5910):

and "but no more than 27 inches long" translates to x <= 27

OpenStudy (anonymous):

wait so what the answer 18 ≤ x ≤ 27 x≥ 18 and x ≥ 27 x ≤ 18 or x≥ 27 none of the above

jimthompson5910 (jim_thompson5910):

combine x >= 18 and x <= 27 and tell me what you get

OpenStudy (anonymous):

c

OpenStudy (anonymous):

btw i sent you a message

jimthompson5910 (jim_thompson5910):

think of a number that is BOTH larger than 18 and smaller than 27

OpenStudy (anonymous):

oh B!

jimthompson5910 (jim_thompson5910):

no, but closer

jimthompson5910 (jim_thompson5910):

x >= 18 and x <= 27 combine to 18 <= x <= 27

OpenStudy (anonymous):

oh that was my first choice scroll up, and i sent you a message is it cool if i have more questions

jimthompson5910 (jim_thompson5910):

oh i didn't see you make that choice

OpenStudy (anonymous):

Choose the inequality that matches the graph below x ≥ -3 or x < 6 x > -3 and x ≤ 6 x≥ -3 and x < 6 x < -3 or x≥ 6

OpenStudy (anonymous):

theres an attachment

jimthompson5910 (jim_thompson5910):

which one do you think it is

OpenStudy (anonymous):

c

OpenStudy (anonymous):

c

jimthompson5910 (jim_thompson5910):

you are correct

jimthompson5910 (jim_thompson5910):

I'm assuming that the solution set is the blue region

OpenStudy (anonymous):

yay!

jimthompson5910 (jim_thompson5910):

lol good job

OpenStudy (anonymous):

Choose the inequality that matches the graph below. x -1 ≤ or x > 3 x < -1 and x > 3 x < -1 or x > 3 x ≤ -1 and x ≥ 3

jimthompson5910 (jim_thompson5910):

and how about this one, which one do you think it is

OpenStudy (anonymous):

c

jimthompson5910 (jim_thompson5910):

right again

OpenStudy (anonymous):

oim on a roll i have some more

jimthompson5910 (jim_thompson5910):

yes you are, you're on fire

OpenStudy (anonymous):

Select the inequality that corresponds to the given graph. 3x - 7 < 11 -4x ≥ 24 -2x + 7 ≤13 3(x - 2) - 3 ≥ x - 5

OpenStudy (anonymous):

this one im clueless !

jimthompson5910 (jim_thompson5910):

Solve each inequality. If the solution graphs out to what is shown, then the original inequality is the answer

OpenStudy (anonymous):

i cant :(

jimthompson5910 (jim_thompson5910):

Ex: -2x + 7 <=13 -2x <=13-7 -2x <= 6 x >= 6/(-2) x >= -3

jimthompson5910 (jim_thompson5910):

So does x >= -3 match with the graph?

OpenStudy (anonymous):

no -6 would

jimthompson5910 (jim_thompson5910):

So choice C) -2x + 7 ≤13 is out

OpenStudy (anonymous):

so we have a b d left

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (anonymous):

you should help me solve :D

OpenStudy (anonymous):

wow its obviosuly b

jimthompson5910 (jim_thompson5910):

you are correct, it is b

jimthompson5910 (jim_thompson5910):

can't be 'a' since that would have an open circle

OpenStudy (anonymous):

Solve: 7(x + 2) > 5x - 10 x > 12 x > -6 x < -12 x > -12

jimthompson5910 (jim_thompson5910):

and d has the solution x >= 2

OpenStudy (anonymous):

also if you divide 24 but

OpenStudy (anonymous):

Solve: 7(x + 2) > 5x - 10 x > 12 x > -6 x < -12 x > -12

jimthompson5910 (jim_thompson5910):

7(x + 2) > 5x - 10 7x + 14 > 5x - 10 what's next?

OpenStudy (anonymous):

-5x on both sides?

OpenStudy (anonymous):

i think

jimthompson5910 (jim_thompson5910):

good

OpenStudy (anonymous):

i got d you

jimthompson5910 (jim_thompson5910):

7(x + 2) > 5x - 10 7x + 14 > 5x - 10 7x + 14 - 5x > 5x - 10 - 5x 2x + 14 > -10

jimthompson5910 (jim_thompson5910):

yes, d is the answer

OpenStudy (anonymous):

lololol watt

jimthompson5910 (jim_thompson5910):

hmm?

OpenStudy (anonymous):

Select the inequality that corresponds to the given graph. 5x + 7 ≥2 and ≤10x 30 6x + 7 ≥25 or 2x - 8 < -4 4x + 10≤ 6 or 5x - 6≥ 14 37 ≤ 8x - 3 ≤ 61

OpenStudy (anonymous):

this one is like i wont get thats a promise

jimthompson5910 (jim_thompson5910):

well you can rule out the 'or' ones because we're talking about a single region (and not two regions)

jimthompson5910 (jim_thompson5910):

so it's either A or D

OpenStudy (anonymous):

d

jimthompson5910 (jim_thompson5910):

that is correct

OpenStudy (anonymous):

woah im a boss right?

jimthompson5910 (jim_thompson5910):

yes you are lol

OpenStudy (anonymous):

Solve -4x - 5 > -9 and describe the graph of the solution. x > 1; closed circle on 1, shading to the right x < 1; closed circle on 1, shading to the left x < 1; open circle on 1, shading to the left x > 1; open circle on 1, shading to the right

OpenStudy (anonymous):

i deserve a medal

jimthompson5910 (jim_thompson5910):

i gave you one, congrats

jimthompson5910 (jim_thompson5910):

what do you get for this next one?

OpenStudy (anonymous):

yes! and honestly no idea

jimthompson5910 (jim_thompson5910):

solve -4x - 5 > -9 for x

jimthompson5910 (jim_thompson5910):

what do you get

OpenStudy (anonymous):

x <1

OpenStudy (anonymous):

c?

jimthompson5910 (jim_thompson5910):

very good

jimthompson5910 (jim_thompson5910):

you nailed it

OpenStudy (anonymous):

thanks ! 7y - 17 > 11 Part 1: Solve the inequality above. Part 2: Describe the graph of the solution.

OpenStudy (anonymous):

7y - 17 > 11 Part 1: Solve the inequality above. Part 2: Describe the graph of the solution.

jimthompson5910 (jim_thompson5910):

Add 17 to both sides Then divide both sides by 7

OpenStudy (anonymous):

still los

OpenStudy (anonymous):

lost

jimthompson5910 (jim_thompson5910):

7y - 17 > 11 7y - 17+17 > 11+17 7y > 28 7y/7 > 28/7 y > 4

OpenStudy (anonymous):

ohhh and what about the grphing part like how doesthat work

jimthompson5910 (jim_thompson5910):

plot an open circle at 4 and shade to the right

jimthompson5910 (jim_thompson5910):

the > means we shade right since it's missing an underline, we use an open circle

OpenStudy (anonymous):

trueee

OpenStudy (anonymous):

16 < 2x + 4 < 4 Part 1: Solve the inequality above. Part 2: Describe the graph of the solution

jimthompson5910 (jim_thompson5910):

Any ideas on where to start?

OpenStudy (anonymous):

i would say x <2

jimthompson5910 (jim_thompson5910):

16 < 2x + 4 < 4 16-4 < 2x + 4-4 < 4 -4... Subtract 4 from all sides. 12 < 2x < 0 What's next?

OpenStudy (anonymous):

divide?

jimthompson5910 (jim_thompson5910):

all sides by what

OpenStudy (anonymous):

2x

jimthompson5910 (jim_thompson5910):

close, just 2 though

OpenStudy (anonymous):

oh so i would get x < 6

jimthompson5910 (jim_thompson5910):

12 < 2x < 0 12/2 < 2x/2 < 0 /2 6 < x < 0

OpenStudy (anonymous):

so the answer is

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