Mathematics Middle School

Help plz:


13. Solve the following inequalities:
a. 3x - 3 > 6
b. 24x + 4 < 52
c. -2x - 2 < 8
d. 10x - 100 > 0

Answers

Answer 1

Answer:

[tex]3x - 3 > 6\\= 3x - 3\\=0x\\0x < 6\\\\24x + 4 = 28x\\28x < 52\\\\-2x - 2 < 8\\= -2x - 2\\= -4x\\-4x < 8\\\\10x - 100 > 0\\= 10x - 100 \\=-90x\\-90x > 0[/tex]<---- Why is -90x greater than 0?

because 90x > 0.

Step-by-step explanation:

hope this helped.

Answer 2

Answer:

a. = x > 3

b. = x < 2

c. = x > -5

d. = x > 10

Step-by-step explanation:

Solve means to find x.

a.

3x - 3 > 6

+3 each side

3x > 9

Divide by 3 each side

x > 3

b.

24x + 4 < 52

-4 each side

24x < 48

Divide by 24 each side

x < 2

c.

-2x - 2 < 8

+2 each side

-2x < 10

Divide by -2 each side (Causing the inequality sign to flip, dividing or multiplying by a  negative causes it to.)

x > -5

d.

10x - 100 > 0

+100 each side

10x > 100

Divide by 10 each side

x > 10

Related Questions

This one is number 6

Answers

i’m not entirely sure, but i do think it could be B.

Possible answer: A

Step-by-step explanation:

it could be A because the first few pairs of the #5 are multiplied by 2 and 25 multiplied by 2 is 50. Im not entirely sure.

Your friend finds the value of 8⁴. 8⁴ = 8x4 = 32 Is your friend correct? Explain

Answers

I would say my friend is correct. I think this because when doing function tables, i would often say x2, x5, etc. This would mean that it would be X x 2, and X x 5. If you replace the "x" and turn it into 8, than I would think it would mean the same thing. So, yes. My friend is correct.

I'm not sure if this was what you were looking for, but I hope this helps somehow!

Archer Middle School has 78 students playing soccer this year. This number is 6 more than 3 times the number of students who played last year. Let n represent the number of students who played last year. Which equation expresses an equality between two different ways of expressing the number of students who are playing soccer this year?

A: n + 6 = 78
B: 3n + 6 = 78
C: n - 6 = 78
D: 3n - 6 = 78

Answers

The answer is B. This is because we know this is 6 more than 3 times the number of students that played last year. A and C makes no sense. D does not make any sense because it is 6 more not 6 less.
b is the answer bc you are adding the 6 and multiplying the 3 with the variable

Find the value of y when x=7. y=____

Answers

In this case, 7 is being added to the odometer which already reads 78. If you add 7 to 78, you get 85. Meaning y = 85!

78+x=85, therefor, y=85

What is the solution to this equation?

−6(x+7)=−30

Enter your answer in the box.

Answers

Answer:

x = -2

Step-by-step explanation:

-6(x + 7) = -30

distribute the -6

-6 * x = -6x and -6 * 7 = -42

-6x - 42 = -30

add 42 to both sides

-6x = 12

divide both sides by -6

-6x/-6 = x and 12/-6 = -2

we're left with x = -2

help look at the pic

Answers

Answer:

59

Step-by-step explanation:

i used a calculator

D

Answer:

D

Step-by-step explanation:

negative divide negative will be positive

A submarine travels at an elevation of 75 3/4 ft relative to sea level. Then its elevation changes by -16 3/8 ft. What is the new elevation of the submarine? Show your work. Please help. :(

Answers

Answer:

it is relative to above sea level -16 3/8

Step-by-step explanation:

only do a row and show where the numbers are

Giovanni can read 210 words per minute. If there are approximately 540 words on a page, about how many pages can he read in 3 hours? Round your answer to the nearest whole number.

462 pages
122 pages
233 pages
70 pages

Answers

It would be 70 pages because 210 divided by 3 is 70

She can read 70 pages in 3 hours.

What is proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

The relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

We are Given:

Giovanni can read 210 words per minute and, books contain 540 pages

So, she can read the portion of book

=210/540

= 21/54 per minutes

= 21/54  x 60

= 23.3 pages in one hour

and in 3 hours she can read

= 23.3 x 3

= 70 pages in 3 hours

Learn more about unitary method here:

brainly.com/question/22056199

#SPJ2

can some one help please?

Answers

Answer:

my suggestion is to break down the 3d shape into a rectangle and two circles. that way u can label the rectangle and the circles to solve the problem.

Step-by-step explanation:

i hope this helps you!

curved surface area of a cylinder is = 2*pi*radius*height = 2*pi*4*12=96pi

Question: 5/12 − 2/5= 1/60​


A. The answer 1/60 is not reasonable because ​5/12​ is closer to 1 than to ​1/2​, and ​2/5​ is closer to 0 than to ​1/2​, making the difference close to 1/2. ​

B. The answer​ 1/60 ​is not reasonable because ​5/12​ is closer to ​1/2​ than to 1, and ​2/5​ is closer to 0 than to ​1/2, making the difference close to​ ​1/2​. ​

C. The answer 1/60 is reasonable because both fractions are closer to 1/2 than they are to 0, making the difference close to 0.

D. The answer 1/60 is reasonable because both fractions are closer to 1 than they are to 1/2, making the difference close to 0.

Answers

Answer:

C

Step-by-step explanation:

It is reasonable: the answer is both reasonable and correct because 5/12 - 2/5 = 1/60. This is because using cross multiply, 5 x 5/12 = 25/60, 12 x 2/5 = 24/60. 25/60 - 24/60 = 1/60.

Both are closer to half: half out of 12 would be 6/12 and 0 would be 0/12, so 5/12 is closer to half because 5/12 is closer to 6/12 than 0/12. Half out of 5 would be 2.5/5 and 0 would be 0/5, so 2/5 is closer to half because 2/5 is closer to 2.5/5 than 0/5.

The difference is close to 0: 1/60 is very close to 0. It's only worth 0.016.

The answer is b bc if you know how to work it out then you can find it

Does the following relationship represent a function?

Answers

Answer:

No. It represents the coordinate plane. it does not represent a function.

Step-by-step explanation:

hope this helped.

No it doesn’t because the coordinate plane doesn’t represent a function.

Consider the points (-5,2) and (3,-9)
What is the VERTICAL distance

Answers

We need to look at the y-coordinates to find the vertical distance. I see 2 and -9. We need to add 9 and 2 to get our answer. The vertical distance is 11.

Answer:

(3,-9)

Step-by-step explanation:

mag comment kong mali

po ang sagot please react

Determine whether each figure creates the conditions to form a unique triangle, more than one triangle, or no triangle..

8 cm along the left side of the triangle and 45 degrees in the lower left of the triangle....

more than one triangle
a unique triangle
no triangle

Answers

Answer:

  (a)  more than one triangle

Step-by-step explanation:

Specifying one side and one angle is not sufficient to define a particular triangle. More than one triangle can meet those requirements.

10 points ... for anyone

Answers

Answer:

gimmethat

Step-by-step explanation:

Name the Solid.
What is the VOLUME of the solid?
Round to the nearest tenth if necessary.

Answers

Answer:

Rectangular Prism

V= 891 m^2

Step-by-step explanation:

The volume is the base (9x9) times the height (11).

Answer:

The answer should be 891m

Step-by-step explanation:

You multiply the Width, Length, and Height ( 9 x 9 x 11)

which would give you 891m.

I promise I will give you a crown if you do it right.
Q. Arrange the following integers in ascending order.
a. 3902, -3923, -3454, -3345, 3623, -3212.
b. 1005, -1090, -1420, -1230, 1302.
c. -100, -110, -99, 99, 101, 110.
d. 9990, 9011, 9909, -9099, -9990, 9099.

Answers

Answer:

A) -3923, -3454, -3345, -3212, 3623 and 3902.

B) -1420, -1230, -1090, 1005 and 1302.

C) -110, -100, -99, 99, 101 and 110

D) -9990, -9099, 9011, 9099, 9909, 9990

Step-by-step explanation:

Sarah babysits her neighbor's son to make money. Her earnings can be represented by the equation
M = 9h
where M is the money she earns and h is the hours she babysits.

Samara babysits her cousin to make money. Her earnings can be represented by the graph.



Which babysitter earns more money per hour?

Answers

Answer:

Sarah makes more money.

Step-by-step explanation:

Sarah makes $9 an hour babysitting while Samara make $3 an hour babysitting. For every 1-hour Sara babysits, Samara has to babysit 3-hours to make the same amount of money. Hope this helps :)

Sarah makes more money

find -3(-1.25) (I cant screenshot it sorry!) HELP PLEASE


-----------------------------------------------

-4 -3 -2 -1 0 1 2 3 4

Answers

Answer: 1.25

Step-by-step explanation:

The answer is 1.25 I think

If each unit on the grid represents 2.5 inches, find the height of the triangle.

Answers

Answer:

15

Step-by-step explanation:

on edge

The answer is 15 inches

Sally has 243.75 pieces of candy. John has 27.4 pieces of candy. How many pieces of candy do they have in all? John thinks altogether there are 217.15 pieces of candy. Is he correct? Explain your thinking.

Answers

Answer:

Yes, John is correct.

Step-by-step explanation:

To find the total amount of candy you must add the amounts Sally and John have. Sally has 243.75 and John has 27.4. When you add those two together you can 217.5 which is what John thinks therefore he is correct.

I NEED HELP ASAP PLEASE
Drag each graph to the correct location on the table. Identify the scatter plots that show a positive association, a negative association, or no association.

Answers

Graph 1 negative
Graph 2 negative
Graph 3 no correlation
Graph 4 positive
Graph 5 no correlation
Graph 6 positive

(Arranged from first to last)

I really need help if u want to help me I will be ur best friend lol help me pls girls and boys! also, i neeeeeed you to not just use this for points, i actually need help ya'll

Answers

Answer:

denise:39

Denise:19.5

David:19.5

Step-by-step explanation:

They split the pears between the two. it shows that n is 39 and the both had pears

denise:19.5

David:19.5

Answer:

denise:39

Denise:19.5

David:19.5

Step-by-step explanation:

look at the other person srry

Ramiro is 3/10 as tall as the flagpole. The flagpole is 5/9 as tall as the nearby tree. The tree is 32 2/5 feet tall. How tall is Ramiro?

Answers

Answer:

5.4 feet

Step-by-step explanation:

Start with the flagpole. It is 5/9 of 32 2/5.

32 2/5 = 162/5.

5/9 * 162/5 = 162/9.

Ramiro is 3/10 as tall as 162/9.

3/10 * 162/9 = 27/5, or 5.4 feet tall

His height is 5.4 f

Thank you...

Does the following relationship represent a function?

Answers

Answer:

yes

Step-by-step explanation:

the output can have more than one input

the input cannot have more than one output

I hope this helps!!

Answer:

No. it does not represent a function.

Step-by-step explanation:

hope this helps.

pls help me with this question

Answers

Answer:

For $14.80 & $10.50 tip is not proportional. The tip of $0.78 is proportional for $5.20 order

Sarah wanted to buy a TV. She had $390 in her pocket. The TV she wanted was $415; however she had a 10% off coupon. The sales tax is 6%. Does she have enough money to purchase the TV?

Answers

Answer: Sarah does not have enough money to purchase the TV.

Explanation: The total price is $395.91.

Answer:

No

Step-by-step explanation:

10% of 415

= 1/10 of 415

= 1/10 * 415

= $41.5

415 - 41.5 = $ 373.5

6% of 415

= 6% * 415

= $24.9

∴ $373.5 + $24.9 = $398.4

∴ Sarah cannot buy the TV as she is $ 8.4 short.

.............................

Answers

Answer:

a

Step-by-step explanation:

i just needed the points

WILL GIVE BRAINLIEST LIKE FIVE HEARTS THE WHOLE SHEBANG
PLZ ANSWER AS SOON AS POSSIBLE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The graph shows how many bottles a machine caps in a certain number of seconds.


Part A

What is the constant of proportionality, and what does it mean in this situation?

Use the drop-down menus to show and explain your answer.

The constant of proportionality is

Choose...

; the machine caps

Choose...

bottles in

Choose...
Note; Each 'Choose', Is either 15, 20, or 30)

Answers

Answer:

Step-by-step explanation:

tha constant of proportionality is 20

and it means tha constant ratio of variable quantity to another which makes it proportional

btw if it don’t make sense i can explain it more

6 x ( 10 + 3 ) - 18 help me please ǝɯᴉʇ ɹnoʎ ɹoɟ noʎ ʞuɐɥʇ .

Answers

Answer:

The answer is 60

Step-by-step explanation:

6 x ( 10 + 3 ) - 18

6 x 13 - 18

78 - 18

60

Answer is 60.

6 • (10 + 3) - 18

6 • 13 - 18 (solve parentheses)

6 • 13 = 78 (multiplication)

78 - 18 = 60 (subtraction)

im on my knees begging for help pls.
Ali has q quarters. Tom has four more quarters than Ali.




Drag and drop the expressions into the boxes to write an expression that represents the number of quarters Ali and Tom have together.


___+___


4 q 5 q+4 q+5 q-4 q-5

Answers

Answer:

q+4=Toms amount of quarters

Step-by-step explanation:

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