someone please help and correct me if im wrong and explain all of it if I am please!!:) 25pts
Which numbers are solutions to the inequality x < −7, using the replacement set {−15, −10.5, −7.2, −7, 0}?

Choose all answers that are correct. I think its b-c-and d

A.

–7

B.

−7.2

C.

−10.5

D.

−15

Solve. I think its A

8y – 24 > –16

A.

y > –5

B.

y > –1

C.

y > 1

D.

y > 5

The solution to which inequality is shown
>(-10)------(-7)------(10)<(7s the number outlined) I think its A
A.

y + 5 > –2

B.

y + 5 ≥ –2

C.

y + 5 < –2

D.

y + 5 ≤ –2

Solve.

solve I think its D
- t/5 ≥15
A
t ≤ –75
B.

t ≥ –75

C.

t ≤ –3

D.

t ≥ –3

Question

22-04-2015
Mathematics

Answered

someone please help and correct me if im wrong and explain all of it if I am please!!:) 25pts
Which numbers are solutions to the inequality x < −7, using the replacement set {−15, −10.5, −7.2, −7, 0}?

Choose all answers that are correct. I think its b-c-and d

A.

–7

B.

−7.2

C.

−10.5

D.

−15

Solve. I think its A

8y – 24 > –16

A.

y > –5

B.

y > –1

C.

y > 1

D.

y > 5

The solution to which inequality is shown
>(-10)------(-7)------(10)<(7s the number outlined) I think its A
A.

y + 5 > –2

B.

y + 5 ≥ –2

C.

y + 5 < –2

D.

y + 5 ≤ –2

Solve.

solve I think its D
- t/5 ≥15
A
t ≤ –75
B.

t ≥ –75

C.

t ≤ –3

D.

t ≥ –3

Answer :

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Kytten Kytten · Answer 1 · 2015-04-22T23:29:18-04:00

*Yes, B, C, and D are correct. -15, -10.5, and -7.5 are solutions to x<-7*........................... ...................................................................................................................................... *8y – 24 > –16............................................................................................................. 8y>8 ADD 24 to both sides ....................................................................................... y>1 so C. divide both sides by 8................................................................................. It is not A because the opposite of subtracting 24 is adding 24. So you add 24 to both sides to undo the subtraction. -16+24=8 Then you divide both sides by 8, which gives you y>1. I think you probably subtracted 24 from -16 instead of adding it.*......................................... ...................................................................................................................................... *I'm not sure what to make of the third one, is that a number line or...?*............................... ...................................................................................................................................... *- t/5 ≥15 ........................................................................................................................ -t ≥ 75 MULTIPLY both sides by 5.................................................................................... t ≤ -75 divide both sides by -1, and flip the sign, because when dividing an inequality by a negative number you must flip the sign.............................................................................. So A would be correct. .................................................................................................... I believe if you divided the 15 by 5 and didn't flip the sign you would get D.*......................... Also, sorry, my enter key isn't working right, so it's all scrunched together.