Question

I need help!!!
Which statements are true?

Choose all answers that are correct.

A.
7 + (–10) < –13 + 17

B.
22 + (–13) > 18 + (–7)

C.
–18 + 24 = –23 + 17

D.
–11 + (–8) > 4 + (–26)

Please Help quick

Answer 1

Please help

Answer 2

Hi; I can help you with this ... Happy Monday to you.

Answer 3

Let's look at them one at a time. On the first one:
Can you tell me what 7 + (-10) is?
Can you tell me what -13 + 17 is?

Answer 4

You too, are you good with math

Answer 5

Yep, I'm good with math (I've taught for over 30 years and have a doctorate in math).

Answer 6

1. -3
2. 4

Answer 7

Cool

Answer 8

Okay, so on (1), remember that "<" means " to the left of on a number line ". If you mark your -3 and your 4 on a number line, does -3 lie to the left of 4 ? If so, the first one is true. What do you think?

Answer 9

I think that sounds right

Answer 10

So what's your answer .... do you think -3 lies to the left of 4 on a number line? (Yes or no)

Answer 11

Yes

Answer 12

Yep! So the first one is true. Good.
Now, tell me the values of the left-side and right-side on the second one.

Answer 13

1. 9
2. 11

Answer 14

Perfect. So, the question here is: Is 9 > 11
">" means "to the right of" on a number line.
Plots 9 and 11. Does 9 lie to the RIGHT of 11 on a # line? (Yes or No)

Answer 15

No

Answer 16

Correct. So, the second one is false.
For the third one, remember the "=" means "live at the same place on a number line". Try that one, and tell me what you think the answer is.

Answer 17

Incorrect

Answer 18

Yep, it's false. 6 and -6 definitely don't live at the same place on a # line.
The last one is the trickiest of all these.
Simplify the left side; simplify the right, and remember what ">" means ... you try it.

Answer 19

By the way, there are memory devices for remembering what ">" and "<" mean here:
http://www.onemathematicalcat.org/algebra_book/online_problems/big_small.htm
(The memory devices here work with both positive and negative numbers, so they're more versatile than the "alligator" memory devices).

Answer 20

Correct
Because -19 is higher than -22

Answer 21

Awesome! Yep, -19 lies to the right of -22! It's true. Good job!

Answer 22

Thanks Goodbye

Answer 23

If you want lots more practice like this, you can go here:
http://www.onemathematicalcat.org/algebra_book/online_problems/ineqTF.htm
Have a great day... bye...

Answer 24

I don't know how to metal or I would

Answer 25

You already did! You click the little medal just to the left of the number on the right side of the screen.

Answer 26

Oh ok

Answer 27

Goodbe

Answer 28

bye

Answer 29

bye