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aleksandrvk [35]
3 years ago
15

Help who ever helps me i will mark them as brain liest i promise!!!​

Mathematics
1 answer:
castortr0y [4]3 years ago
8 0

Mini inequality crash course:

<em />

<em>Is it greater than or less then?</em>

This can be a bit tricky to remember. How I do this is looking at the shape of the sign?

So the number that is BIGGER is on the side where the mouth opens or the WIDDER side. Biggest number goes on widest side

Bigger number goes here--->   __ >

< __ <--- Bigger number goes here

The number that is the SMALLEST goes on the side where the "pointy" part is

Smallest number goes here---> ___<

> ___ <---Smallest number goes here

***There's an image bellow that also explains it. Hopefully it makes sense

(This all applies the same way to ≥ and ≤ )

You read and say inequalities from left to right. For example I will use example 6:

s < -6 ...............….......S is less then -6

-6 > s..........................-6 is greater then s

^^^Notice that these show the exact same thing yet they are said differently

Here is another example, but with some easy numbers I made up:

3 < 6.........Three is less then six

6 > 3.........Six is greater then three

There are two kind of inequalities:

≥ / ≤

Or

> / <

≥ / ≤

^^^ These two are the greater then or equal to / less then or equal to signs

This means that it includes the number.

***How I remember is the little bar underneath the symbol is like half an equal sign, so the numbers can be equal or not***

For example in number 5:

x ≤ 3 ---> x is less than or equal to 3

^^^This means that x can be three OR any number SMALLER then three

Another example:

x ≥ -34 ---> x is any number greater then OR equal to -34

Graphing inequalities on a number line:

The circles will always be placed on the number that the variable is greater then, less the, greater then or equal to, or less then or equal to

<em>How to tell if the circle is colored or not:</em>

If the inequality has either > or < then the circle is hollow/empty/not colored in

If the inequality has either ≥ or ≤ then the circle is shaded/colored in

***How I remember this is that the symbol has the extra bar at the bottom so the circle will have a little extra something in it

Which direction will the arrow go?

If it is x < # or x ≤ # or # > x or # ≥ x then the arrow will go to the left of the circle.  It signifies that x is any number less then/ less then or equal to the #

****How I remember it is if the variable is<em> L</em>ess then it goes <em>L</em>eft

If it is x ># or x ≥ #  or # < x or # ≤ xthen the arrow will go to the right of the circle.  It signifies that x is any number more then/ more then or equal to the #

16. She has 3,187 signatures but she still needs more, so the expression would be 3,187 + x (x being how many more signitures she needs to reach her goal)

She needs at least 5,000. It has to be more or equal to 5,000

So we have the equation:

5,000 ≤ 3,187 + x    or 3,187 + x ≥ 5,000

Now solve for x by subtracting 3,187 to both sides

x ≥ 1, 813

To reach her goal she has to still get 1,813 or more signitures

I really hope this helped and that you understand now!

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lina2011 [118]

Answer:

17.4456 Pretty sure they want you to round up not sure

Step-by-step explanation:

I like to divide by 100 the get the rate for 1% and then multiply by the actual number in your case 9 you can use a calculator for this to make it easy and you can get it pretty simple this usually works for all percent's if you have multiple like 9.74 use the lowest percent .04 that way you can use it to find the rest I hope this helps :) lmk if you want me to explain more

7 0
3 years ago
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LekaFEV [45]
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6 0
3 years ago
Read 2 more answers
Find the equation of the line passing through the points A(3,2) and B(6,3)
icang [17]

Answer:

y = \frac{1}{3} x+1

Step-by-step explanation:

m = m = \frac{change in y}{change in x} \\m = \frac{3 - (2)}{6 - (3)}\\m = \frac{1}{3} \\Find the value of b using the equation of a line \\y = mx+b\\y =( \frac{1}{3} )x + b\\2 =( \frac{1}{3} ) * (3) + b\\cancel common factor\\1 + b = 2\\b = 1\\y = \frac{1}{3} x + 1

5 0
3 years ago
What is 1/8 in a decimal
sukhopar [10]
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And that is your answer.

Hope I Helped You!!! :-)

Have A Good Day!!!


7 0
3 years ago
Read 2 more answers
Solve for z<br> 4/z =<br> 12/5 <br> what is z
Verdich [7]

Answer:

5/3      = z

Step-by-step explanation:

You can use proportions to figure this out.

Imma solve this as I work through it.

So

4/z is equal to 12/5. So you can do something called the butterfly method (I have never used this before, but it works tho) and the method involves only multiplication and division.

Lemme clean this up for ya

The butterfly method involves multiplying in a cross format on both sides, so the

4                       12

__        =      ______

z                          5

becomes 4 times 5, and z times 12.

4 times 5 is 20, and z times 12 is 12z

so you now have 20 = 12z

Lets simplify the equation by dividing by 4s

20 divided by 4 is 5 and 12z divided by 4 is 3z

so

5 = 3z

You can divide again

by dividing both sides

by

3

to get the unit rate of z.

It will be a fraction though

and it won't look pretty

but here it is:

5

__  = z

3

So

It is

5/3

Hope this helps

and hope you get a laugh out of this

yeeha

7 0
3 years ago
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