Question

Help on this please...

The recommended weight range for someone who is 62'' tall is ( ) to ( ).
See Attachment

Answer 1

Since there are two values, I'm guessing one way to do it would be to plug 62 instead of h although I am not sure.

Answer 2

yes, I believe they want to plug 62 for h.

Answer 3

I got from 107 to 140

Answer 4

that is Correct! thanks!

Just so you know that I am doing the work and not just copying what you say.... I did attempt it...here is my first equation..

25h-7w=800
25(62)-7w=800
1550-7w=800
-7w=825
w=118

So I did something wrong... because you got 107.

Answer 5

800-1550 =-750 not 825

Answer 6

ah ha! I was going by the example they gave me.
Thank you!

Answer 7

Do you know if the answer was right?

Answer 8

Yes. Soon as I enter them I am allowed to ''check'' my answer.
And you were correct! :)
(as usual) LOL

Answer 9

Ahh, great.

Answer 10

but at least you are a good teacher and I am LEARNING. :)

Answer 11

I have one more graphing question then I will be done for tonight.
Do you have time to help me? (I can't wait til graphs are done!) LOL

Answer 12

Sure, no problem.

Answer 13

Graph the system of linear inequalities.
4x-2y < 0
2x+4y <8

Answer 14

but both those have the line under them.

Answer 15

Ok so what do you know about the lines already. Are they dotted or solid?

Answer 16

dotted. (i think).. hope LOL

Answer 17

If they have the little bar under, it means they are solid. Remember that. A bar under means that the line is SOLID!

Answer 18

:(

Answer 19

Haha, Now can you isolate both y's?

Answer 20

Ok, remembering that!!! bar under means SOLID!
got it!

Answer 21

Great! :)

Answer 22

Isolate the first equation first. Leave the other one out for now.

Answer 23

well, you're gonna kill me LOL
I jumped ahead and tried to do it and got it wrong..
So I have to attempt to get a similar one correct.
Which they gave me
4x-6y < 0
6x +4y < 24

Answer 24

Ok... New one then! So... let's work with the first equation ONLY for now so is there any lines under those?

Answer 25

both yes

Answer 26

Ok!

Answer 27

Solid!

Answer 28

:)

Answer 29

\[4x-6y \le0\]

Substract 4x from both sides.

\[-6y \le-4x\]

Make them both positive so SIGN SWITCHES!

\[6y \ge4x\]

Divide both sides by 6!

\[y \ge 2/3x\]
I reduced 4/6 to 2/3 for the x

Answer 30

Try to find two coordinates for \[y \ge2/3x\] now if you can.

Answer 31

Oh wow... no wonder I got the first one wrong, lol

Answer 32

These are easy to do once you understand them.

Answer 33

Ok, I am waiting for the ''easy'' part to come along haha. so i better get understanding them, lol

Answer 34

Did you find two pairs of coordinates for the equation?

Answer 35

no because the fraction is confusing me.

Answer 36

Ok so we'll do it easy with fractions with a TABLE OF VALUES :D

Answer 37

You have 3 pairs of coordinates on here which is more than enough to create a line.

Answer 38

As you can see, you just plug in the numbers!

Answer 39

Now let's graph the first line into our cartesian plane!

Answer 40

(0,0), (3,2) (6,4)

Answer 41

Exactly.

Answer 42

am I headed in the right direction lol OK!

Answer 43

Yes, you are.

Answer 44

Your first line should look like this!

Answer 45

Now we need to do the same thing with the second equation and add it to the cartesian plane.

Answer 46

my first line was same as yours...working on my second line.

Answer 47

Great! Start by isolating your y again.

Answer 48

\[6x + 4y \le24\]

Answer 49

divide both sides by 6?

Answer 50

By 4 since it's the y you want to isolate.

Answer 51

y > 1/5x ?

Answer 52

What happened to your 24?

Answer 53

The x is right although it's negative.

Answer 54

24 when divided by 4 is 6

Answer 55

Yes so you add it also.

Answer 56

Now you mixed up the signs also.

Answer 57

I'll explain this in detail. Look.

Answer 58

Just when I thought the last problems were starting to make sense LOL

Answer 59

OK go ahead.

Answer 60

\[6x + 4y \le24\]

TRY TO GET Y BY ITSELF!

If you have 6x on the left, you must get rid of it.

Remember this!!!!!!! What you do to one side, you must do to the other!!!

6x-6x + 4y < or equal to 24-6x

This now makes

4y < or equal to 24-6x

Divide everything by 4 because....What you do to one side, you do to the other!

\[y \le6-1.5x\]

Answer 61

Ah! and now to figure out what the coordinates are

Answer 62

Try with a table of values .