Question

(Medal and Fan.pleasee. major helpp meee :( please guysss pleaseee and a cookie. I'll give you a cookie!: ♥♥)

3. Which of the following are soluations to the inequality 2y+2<7 ? Mark all that solutions.

a.2
b.0
c. -1
d. 1

Answer 1

someone please help me :(

Answer 2

All of them. If you subract 2 from both sides of the equation, you get 2y<5. You can then divide both sides by 2 to get y<5/2. (since the sign is positive, you don't have to flip the inequality sign). This means that any y less than 5/2 will satisfy the inequality (5/2 is the same as 2.5) 2, 0, -1 and 1 are all less than 5/2

Answer 3

ohh. okay. can I ask another question pretty please?

Answer 4

Sure, I can't guarantee I'll be able to answer it though :)

Answer 5

5. g+ 0.7 > 3.0

a. g > 3.7
b. g < 3.7
c. g > 2.3
d. g < 2. 3

Answer 6

g > 2.3

All you need to do on this one is isolate the g term, so subtract 0.7 from both sides of the inequality. 3.0 - 0.7 is 2.3 :)

Answer 7

ohhh okay. :) I see. my I ask another one? if thats okay?

Answer 8

Ask away!

Answer 9

yay! :).

t/-4 < (less than or equal to) 12

a. t < -3
b. t > -3
c. t < -48
d. t > -48

Answer 10

just to make sure I'm reading that right, is this what the equation looks like?

Answer 11

yes. ^_^

Answer 12

t≥-48

What you need to do is multiply both sides by -4, which will give you -48 on the right side - and isolate the t term on the left. However, you need to be very careful when your multiplying or diving an inequality by a negative term, because the inequality sign will flip! So instead of ≤ on the expression at the beginning, it will turn into a ≥

Answer 13

Imma write this all down so i can know :)

Answer 14

you are very smart ^_^

Answer 15

I have four more questions. if that's okay? ^_^♥

Answer 16

Here's a great webpage that goes over solving inequalities if you're interested! :)

http://www.mathsisfun.com/algebra/inequality-solving.html