Mathematics Middle School

Equations and inequalities

Can sombody help me about that topic and write me some guided notes about them

Answers

Answer 1
Inequalities and equations use similar steps to solve, but inequalities give a range of numbers that can represent the variable while an equation will give a direct answer.

Example:

4+5x=24

First you would subtract 4 or add the opposite of 4 from 24.

4+5x=24
+(-4) +(-4)
—————
5x=20

Then divide each side by 5 or multiply each side by the reciprocal of 5 to isolate the variable.

1/5*5x=20*1/5 (reciprocal)
X= 4

You would use the same steps in an inequality but end up with a different sign.
Answer 2
someone already answered so

Related Questions

Which equations are equivalent to Three-fourths + m = negative StartFraction 7 over 4 EndFraction? Select three options.
m = StartFraction 10 over 4 EndFraction
m = negative StartFraction 10 over 4 EndFraction
m = negative five-halves
StartFraction 11 over 4 EndFraction + m = negative one-fourth
Negative five-fourths + m = negative StartFraction 15 over 4 EndFraction

Answers

Answer:

A, B , and E

Step-by-step explanation:

Correct me if im wrong!

Answer: abc

Step-by-step explanation:

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Answers

Answer:

Answer: 51 and 15 or 42 and 24.

hope this helps

Have a great day/night.

Answer:

51 and 15

Step-by-step explanation:

eghit feet less than twice the width translate the exxpression from verbal to algabraic
or the other way around

Answers

Answer:

8-2x

Step-by-step explanation:

8-2x
:) have a great day

pls help :( i'm stuck

Answers

Answer:

Step-by-step explanation:

width is 9 and height is 6

Lexie wanted to have a heel-toe race with her older brother, Josh, and her sister, Hannah. She said, “My feet are smaller, so I should only have to go a shorter distance than you two.” Her sister said, “That makes sense - let’s race our ages.” They measured off 7 feet for Lexie’s track, 16 feet for Josh’s track and 10 feet for Hannah’s track. “Now let’s measure our shoes,” said Josh. “My shoe is 1/2 of a foot,” said Lexie. “Three of my shoes add up to 2 feet,” said Hannah. Josh said his shoe was exactly a foot long.


Who needs to take the fewest steps to walk his or her track? Explain how you found your answer.

How many more steps do the two others need to take to finish their races?

Answers

they should have a total of 20 steps.

quickkkkkkkkk plz helpppppppppppp

Answers

the answer is:

A) (-7,4)

Answer:

The answer is D

Step-by-step explanation:

lmk if its correct

Evaluate √36
sorry Ф↔Ф

Answers

Answer:

The square root of 36 is 6.

Step-by-step explanation:

6*6=36

The answer to your math problem is 6

Given the proportional steel cost, how much do 200 pounds of steel cost?

Answers

Answer:

Your answer is B, 150

Step-by-step explanation:

If we look at the chart it says 160 pounds of steel is 120, so for example if we start from 40 we will have 30, so every time we add 40 pounds 30$ are added, meaning that 160+40=200, 120+30= 150, Thus B or 150 is our answer.

Answer:

$150

Step-by-step explanation:

Hi,

We know that 160Ibs of steel costs $120. To find the cost of 1Ib of steel, we have to divide both 160Ibs and $120 by 160. Here's what I mean...

Total amount: 160Ibs

Divide by 160...

Total amount: 1Ib

Total cost: $120

Divide by 160...

Total cost: $.75

That means that each pound of steel costs $.75

Now, multiply by 200 to get the total cost if you buy 200Ibs of steel...

200 x .75 = 150

The total cost would be $150

Hope this helps :)

I have a triangle with two equal sides and need to find x the angle they give me is 74, and my answer needs to be 53 or 56 but all i get is 32 can someone help me.

Answers

Answer:

56 prob

Step-by-step explanation:

this is a repost since i forgot the photo on the last one help plz

Answers

Answer:

Sorry but I don't know

Step-by-step explanation:

15)
(2,3), (8,-3), (2,-8), (-4,-3)

16)
(1,1), (1,7), (7,1), (7,7)

Cody made 3/4 of a kilogram of trail mix. If he puts 3/8 of a kilogram into each bag, how many bags can Cody fill?

Write your answer as a fraction or as a whole or mixed number.

Please help this is due today

Answers

Answer:

2 bags

Step-by-step explanation:

you take 3/4 and double it to get 6/8. 3 goes into 6 two times. so 2 bags

2 bags just because it’s 2 bags

please help me im not sure what to do

Answers

Answer:

(-7, 4)

Step-by-step explanation:

The given fraction usually read [tex]\frac{rise}{run}[/tex] or "rise over run". The new point is (-7, 4) because of going from that point to the next with the fraction. Draw a line going through (-6, 1) and (-7, 4)

The line is attached

Hope this Helps!! :))

answer plzzz (ignore thisssssssssssssssss)

Answers

Answer:

P- number?

Step-by-step explanation:

I don't know but it's probably wrong :(

CAN SOMEONE PLEASE SOLVE THIS I HAVE NO TIME y + y + y

Answers

Answer:

3y

Step-by-step explanation:

there are three y's so the answer is 3y

Hillary bought a sweater that was raised in price from $89 to $106. What was the percent of increase/decrease on the sweater? Round your answer to the nearest tenth of a percent.

Answers

The price increase on the sweater is 19.1% (rounded)
I believe that the rounded the percentage increase would be 19.1%.

I hope this helped!! ~(^v^)~

What is the length of side XY as shown on the coordinate plane?

On a coordinate plane, a rectangle has 4 points. Point W is (negative 5, 3), point X is (0, 3), point Y is (0, negative 1), and point Z is (negative 5, 0).
0 units
1 units
3 units
4 units

Answers

Repost the same with the picture of the graph so we can help you!

The length of side XY on the coordinate plane is 4 units.

What is distance between two points?

The distance between two points is the length of the line segment joining them.

Given that a coordinate plane, a rectangle has 4 points. Point W is (-5, 3), point X is (0, 3), point Y is (0, -1), and point Z is (-5, 0).

Distance between two points = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Therefore,

XY = [tex]\sqrt{(0-0)^2+(-1-3)^2}[/tex]

XY = [tex]\sqrt{4^2}[/tex]

XY = 4

Hence, the length of side XY on the coordinate plane is 4 units.

Learn more about distance, click;

https://brainly.com/question/15172156

#SPJ3

ANSWER ASAP GIVING BRAINLIEST FIVE STARS AND A HEART!

Answers

Answer:

Multipy radius by radius to get the diameter, add that to the circumference and height, but first multiply by pi to get the area around the cylinder.

Step-by-step explanation:

Jake paid $13.50 for admission to the county fair and bought 9 tickets to play games. If he spent a total of $36, what is the cost, c, of one ticket? Write and solve an equation.

Answers

Answer:

the answer is 5.50

Step-by-step explanation:

hsbsbyehs

Answer:

2.50

Step-by-step explanation:

36 - 13.50 = 22.50

then divide that by 9 = 2.50

1. Solve for x: x/12 + 15 = 648
x=__
2.Solve for x: −4(1.75 + x) = 18
x=__
3.Solve for x: 6x - 9 = 42
x=__

Answers

Answer:

1. x = 7596

2. x = -6.25

3. x = 8.5  

hope this helps:)

Answer:

[tex]1)\frac{x}{12} +15=648\\\\\frac{x}{12}=648-15\\\\\frac{x}{12}=633\\\\x=633*12\\\\x=7596[/tex]

[tex]2) -4(1.75+x)=18\\\\-7-4x=18\\\\-4x=18+7\\\\-4x=25\\\\x=-\frac{25}{4}[/tex]

[tex]3)6x-9=42\\\\6x=42+9\\\\6x=51\\\\x=\frac{51}{6}[/tex]

HELP ANSWER BOTh PLZ I BEG YOU

Answers

5 * x = 15

You can add 5 multiple times until you get 15 which is

5 + 5 + 5 = 15

5 + x = 15

You can reverse that to:

15 - 5 = x

And you’ll get your answer

Imagine attached for reference

Which of these expressions is the expanded form of -3(2p + 3s)
6p + 9s
6p + 3s
8ps
-6p - 9s

Answers

-6p - 9s is your answer I hope this helped!
-6p-9s should be ur answer!!!

y= 7(81)x - 17 (3). HELPPP!!!!!!!!!!!!!!!!!!!????????????

Answers

To start with...

y= 7(81)x - 17 (3)

y= 7•81x - 17•3

y= 567x - 51

This is your final answer.

Jaime is wrapping a ring. He put the ring in a square pyramidal box before wrapping it. The perimeter of the base of the box is 8 inches. The slant height of the box is 2.75 inches. How much wrapping paper will he need to cover the box with no overlaps?

Answers

he will need 22 inches of wrapping water.

What is the first step you would take to solve this equation, and why? 49n + 986 = -43.

Answers

Answer:

First step is to subtract 986 from both sides.

Step-by-step explanation:

I would subtract 986 from both sides because then it will balance out the equation; variable on one side and the number on one side. With this it will be easier to solve for n.

I would subtract 986 to each side to get 49n by itself then divide the coefficient 49n by itself to get N alone

What is the internal angle sum of a polygon with 10 sides?

Answers

Answer:

1440 degrees.

Let me know if this helps!

Answer:

1,440

Step-by-step explanation:

I hope this helps!

Brainlist?

please please help mehhhh

Answers

Answer:

C

Step-by-step explanation:

Its asking a question that does not make sense to the listener. Comparing the question in answer option C to the other three answer choices, asking how long do you own a pair of shoes doesnt make sense. while the other questions ask stuff like what is the shoe size of the students, how may pairs do you have, or how much someone payed for something makes sense. But asking how long you own a pair of shoes does not. If the question were to be re worded, it would be something along the lines of: How long have you owned those pair of shoes?

HEYOO PEEPS UHHH I NEED HELP

Answers

Answer:

x<21

Step-by-step explanation:

It’s eighteen hope this helps a lot oh and I’m trying to send AWNSER sooooooll

PLEAE HELP HELP HEPLP

Answers

Answer:

D

Step-by-step explanation:

The data is not skewed to the right or left and is not centered around the median.

Answer:

I would say D

Step-by-step explanation:

The data is spread out and the most amount of dots are on 5 dollars but it could also be A but i  dont think so

brainliest answer A parallelogram is shown below:


Part A: What is the area of the parallelogram? Show your work. (5 points)

Part B: How can you decompose this parallelogram into two triangles? If this parallelogram was decomposed into two triangles, what would be the area of each triangle? (5 points)

Question 1 options:

Answers

Answer:

what do you want me to do?

Part A. The formula for finding the area of a parallelogram is A=bh where A is the area, b is the base and h is height.
A=bh where b=8 feet ,h=3/4 foot and A=?
A=8*3/4
A=6 feet The area of the parallelogram is 6 feet square
Part B.You can decompose a parallelogram into two triangles by drawing a diagonal from one end to the another.The formula for finding the area of each triangle is A= 1/2bh where A is area b is base and h is height.Therefore:
A=1/2bh where b=8 h is 3/4 and A=?
A=1/2*8*3/4
A=3 feet square. Therefore the area of each triangle is 3 feet square.





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Shari determines that she needs to sell more than $200 worth of fruit at his produce stand in order to make a profit. Which number line models all fruit sales, in dollar ($), for which Shari can make a profit.

Answers

Answer:

where are the number lines?

Step-by-step explanation:

First you need to show the number lines, and then I can help... or not

You can't see the answer choices

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