Mathematics Middle School

Plz help due today

Explain why x = 5 makes 4x − 1 ≤ 19 true but not 4x − 1 < 19.

Part B: What value from the set {6, 7, 8, 9, 10} makes the equation 5x + 2 = 47 true? Show your work.

Answers

Answer 1

Part A

Step-by-step explanation:

4x − 1 ≤ 19 is the same as

4 times 5 minus 1 = 19

So 19 ≤ 19

The symbol ≤ means that the number on the left of the sign is smaller OR EQUAL TO the number on the right

19 is not smaller than 19 but is equal to 19

The symbol < means only that the number on the left is smaller than the number on the right

Part B

Answer:

9

Step-by-step explanation:

5x + 2 = 47

We need the x ( which is the unknown number) to be by its self on one side of the equation ( or the equal sign)

The equation expanded is:

5 * x + 2 = 47 (the symbol * is the times symbol)

Firs we can move the 2 to the other side by taking away the two from the left of the equation and moving it to the right

5x + 2 = 47

-2 -2

To take away the two on the left of the equation we do 2-2 which is 0. And whatever we do on one side of the equation we have to do on the other so 47-2 which is 45

Now the equation looks like:

5x = 45

Now remember that 5x is actually 5 times x

So

5 * x = 45

Now we need to have only x on the left side so we need to move the 5 to the right

To do this we have to make * 5 turn into 0

The opposite of times is divide so we divid the 5 by 5

5/5= 0

Now we do the same on the other side of the equation

5x = 45

5x/5 = 45/5

x = 9

So now x is by its self we can see x = 9

So the answer is

9

Answer 2
[PART A]

      We will input x = 5 into both inequalities and solve for x by isolating the variable.

4x − 1 ≤ 19

4(5) − 1 ≤ 19

20 − 1 ≤ 19

19 ≤ 19

    ➜ This is true because the inequality states that 19 is less than or equal to 19. 19 = 19, so this is true.

4x − 1 < 19

4(5) - 1 < 19

20 - 1 < 19

19 < 19

    ➜ This isn't true because the inequality states that 19 is less than 19. We do now have the equal to part here, and 19 is not less than 19. This is why it isn't true.

[PART B]

      We will solve for x in the given equation and see which value from the set is correct. You can also substitute each value from the set into the equation until you find the correct answer, but this method is quicker and less prone to errors.

Given:

5x + 2 = 47

Subtract 2 from both sides of the equation:

5x = 45

Divide both sides of the equation by 5:

x = 8

        Part B Answer: 8

Related Questions

PLZZZ help with this its pretty simple!

Answers

Answer:

-4x-2h+12 if your looking for difference but if you need the value of x it's a different answer

Step-by-step explanation:

I need help because I don't understand this at all- I thought it was easy at first but the "1 through 5" part is confusing because there is no five.. so if you understand this please help

Answers

Answer:

1. -(-6)                              (Least)

2. -4

3. the opposite of 2

4. the opposite of 0

5. the opposite of -10  (Greatest)

Last one you guys!!!

Answers

Answer:

53 degree

Step-by-step explanation:

180-127=53.......

Answer:

53

Step-by-step explanation:

Hi,

When two lines add up to 180 degrees, they are said to be supplementary angles. Since we have one angle measurement, all we have to do is subtract it from 180.

180 - 127 = 53

That means the other angle measures 53 degrees.

Hope this helps :)

3) Ted’s car is now worth $9000, which is 60% of what he paid for it. What did he pay for his car? ___

Answers

Answer:

$15,000

Step-by-step explanation:

uh I kind of just looked for a number bigger than 9 and the first one I plugged in was 15 and it worked! I checked it by converting 60% to decimal form and multiplying. I got the correct value so it's right

15000•0.6= 9000

....

There are 20 students in a book club.

Answers

10-13 is 5
14-17 is 5
18-21 is 3
22-25 is 4
26-29 is 3

Find the value of a.
Thanks so much for the answers im just really bad at math sorta

Answers

the answer is 39

this is because 90-51 = 39 and that is a right triange (90 degrees)

Step-by-step explanation:

✧ [tex] \underline{ \underline{ \large{ \tt{G \: I \: V \: E \: N}}}} : [/tex]

∠ AOE = a° , ∠EOD = 51° , ∠DOB = 90°

✧ [tex] \underline{ \underline{ \large{ \tt{T \: O \: \: F \: I\: N\: D}}} }: [/tex]

value of a

✑ [tex] \underline{ \underline{ \large{ \tt{S \: O \: L \: U \: T \: I \: O\: N}}}}[/tex] :

~Set up an equation and solve for a :

☄ [tex] \large{ \bf{a \degree + 51 \degree + 90 \degree = 180 \degree}}[/tex] [ Sum of angle in a straight line ]

~Add the numbers : 51° & 90°

➛ [tex] \large{ \tt{a \degree + 141 \degree = 180 \degree}}[/tex]

~Move 141° to right hand side and change it's sign

➛ [tex] \large{ \tt{a \degree = 180 \degree - 141 \degree}}[/tex]

~Subtract 141° from 180°

➛ [tex] \large{ \tt{a = 39 \degree}}[/tex]

⤇ [tex] \boxed{ \boxed{ \large{ \text{Our \:Final \: Answer} : \underline{ \tt{a = 39 \degree}}}}}[/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

⭒Let me know if you have any questions regarding my answer! ⭒

✎ [tex] \underline{ \underline{ \mathfrak{Carry \: On \: Learning}}}[/tex] !! ♕

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

PLZZZ help with this its pretty simple!

Answers

B - binomial with a degree of 3

there’s two terms making it a binomial and it’s degree is 3 because 3 is the highest exponent. i just finished this unit :)

Answer:

B.) Binomial with a degree of 3.

Step-by-step explanation:

The degree is the highest exponent in the polynomial (3 in this case), it's a binomial because there are two terms.

Have a nice day, fam. Spread The Love.

Which of the following statements must be TRUE about the model for the new rabbit population when compared to the model you developed for the original rabbit population in Part A? Select all that apply. A. As the number of years increases, the graph of this model will be less steep than the graph of the original model. B. The coefficient will become 2. C. The y-intercept of the graph will be different. D. The function rule will be quadratic. E. The base of the exponent will change from 3 to 2. F. As the number of years increases, the graph of this model will be steeper than the graph of the original model.

Answers

Answer:

A

Step-by-step explanation:

a is true because rabbit's population is increasing  

Joud has a rectangular fish tank. The dimensions of the fish tank are shown in the diagram. I AM FAILING PLZ HELP ME PLZZZ

Answers

Answer:

The answer is 300

I believe the answer is 1,636 (surface area btw) I used this website https://www.omnicalculator.com/math/surface-area-rectangular-prism it helped me a lot (sorry if I didn’t help)

find the area of the hexagon

Answers

Answer:

A≈259.81

Step-by-step explanation:

A=33

2a2=3·3

2·102≈259.80762

Hope it helps!!!

:)

the area of the hexagon is 259.81

Please help!!!!


.
.
.

Answers

bestie you need to explain, as much as i would like to help you this has no context what questions are there?

Answer:

i now this answer will be taken down but i need more info because i cant help u because there is no question

Step-by-step explanation:

hewlp pwealse me giwve brainllest plllllllllllllllllls

Answers

Answer:

D. 8 ft

Step-by-step explanation:

4200/525 = 8 ft

Yeah I agree it’s D sorry if I’m wrong though.

The product of 4 and one less than x is 230. Find x

Answers

Answer:

58.5

Step-by-step explanation:

230/4=57.5

57.5+1=58.5

4(x-1)=230
4x - 4= 230
4x=230+4
4x=234
x=234/4
x= 58.5
hope this helped!

The graph represents data from an experiment.

Complete the sentence by selecting the correct distribution type from the drop-down menu.

The distribution of the experiment data is
Choose...
A) Normal
B) Uniform
C) Skewed Right
D) Skewed Left
I included 2 pictures because I couldn't fit the whole thing so it's the top of it and the bottom.

Answers

Answer: Skewed left.

Step-by-step explanation:

There is a peak on the left side and the data rises higher on that side.

find area of a right triangle with a width of 4cm and a length of 10cm

Answers

Answer:

I'm almost sure 10 times 4

The area equals 40. The height is 10 and the width is 4 so u just multiply. Which equals 40. Hope this helps :)

A prism and two nets are shown below:


Image of a right triangular prism and 2 nets. The triangle bases have base 4, height 3, and diagonal side 5. The length of the prism from the bases is 9.4. Net A has 3 rectangles in a row. The middle one has sides AC and CD. This middle one has triangle ABC on top and identical triangle below. Net B is the same except that the triangle base ABC is on top of the last rectangle which has sides AC and CD. Units are in inches.


Part A: Which is the correct net for the prism? Explain your answer.


Part B: Write the measurements of Sides AB, BC, and CD of the correct net.

Part C: What is the surface area of the prism? Show your work.

Answers

Part A: The correct net for the prism is net A.

Part B: AB = 3 in, BC = 5 in, CD = 9.4 in.

Part C: The surface area of the prism is 124.8 square inches.

What is triangular prism?

A triangular Prism is a pentahedron. It is a 3-D shape with two identical faces in the shape of a triangle connected by three rectangular faces. The edges and vertices of the bases are joined with each other via three rectangular sides.

For the given situation,

The diagram shows the triangular Prism and the 2 nets for it.

Part A:

The correct net for the prism is net A. Net A suits the triangular Prism and it is fold-able along the net.

Part B:

The measurements of sides of the net are

[tex]AB, h=3in[/tex]

[tex]BC, S=5in[/tex]

[tex]CD,l =9.4in[/tex]

Part C:

Base of the triangular prism,b = 4 in

The three sides of the triangle is S1,S2,S3 = 3, 4, 5 inches.

The surface area of the prism is

[tex]A = bh+(s1+s2+s3) l[/tex]

On substituting the above values,

⇒ [tex]A = (4)(3)+(3+4+5) (9.4)[/tex]

⇒ [tex]A=12+(12)(9.4)[/tex]

⇒ [tex]A=12+112.8[/tex]

⇒ [tex]A=124.8[/tex]

Hence we can conclude that

Part A: The correct net for the prism is net A.

Part B: AB = 3 in, BC = 5 in, CD = 9.4 in.

Part C: The surface area of the prism is 124.8 square inches.

Learn more about triangular prism here

https://brainly.com/question/12280842

#SPJ2

Answer:

For part A the answer is net A

Step-by-step explanation:

If you’re good at math and know the answer please help!!

Answers

Answer:

The fisrt net, a, has a surface are of 160 inches

Step-by-step explanation:

10 / 2 = 5

5 * 3 = 15

15 * 4 = 60

10 * 10 = 100

100 + 60 = 160 inches

Hope this helped! Have a nice day, and feel free to follow me on insta (leo_g_rios)

-XxDeathshotxX

Answer:

The first one, A, has a surface area of 160 inches

Step-by-step explanation:

10 / 2 = 5

5 * 3 = 15

15 * 4 = 60

10 * 10 = 100

100 + 60 = 160 inches

Hope this helps

A plane descends at a rate of 212 feet per minute. What will the total change in elevation be after 6 minutes?

Answers

Answer:

The total change would be 1272 feet

Step-by-step explanation:

Solve:

212*6= 1272

Check your work:

1272/ 6= 212

Hope this helps!

Answer:

1272

Step-by-step explanation:

If you multiply 212 by 6, you get 1272.

Because, since the rate is 212 and you want to know what the total change will be after 6 minutes, you multiply 212 by 6 and you get 1272 so, 1272 is your answer.

Hope this helps!

Please pick A B C Or D

Answers

Answer:

B

Step-by-step explanation:

Drag and drop the correct option to the questions

1) What does l stand for in cones and pyramids? Response area

2) What does l stand for in rectangular prisms? Response area

3) What does p stand for in surface area of pyramid? Response area

4) What is the formula for p? Response area

5) What does B stand for in pyramids? Response area

6) What is the formula for B? Response area

7) What does s stand for?

Answers

Answers:

1) πrl Lateral area

2)  You have calculated the volume of a rectangular prism using the formula V 5 lwh, where V is the volume, l is the length, w is the width, and h is the height.

3)P is the perimeter of the base, and s is the slant height.

4) I dont know

5) The surface area of a pyramid is , where B is the base area, P is the base perimeter, and the slant height. , where h is the pyramid altitude and r is the inradius of the base.

6) (a+b)² =a² + 2ab + b² (a−b)² = a² − 2ab + b² (a+b)(a–b)=a² – b²

7) I dont know.

Solve the following problems:

Given: circle k(O), diameter US,
Measure of arc RU=50, measure of arc UT=30
Find: measure of angle RUS and measure of angle UST

Answers

Answer:

100 and 120

Step-by-step explanation:

I might be wrong but there were no answers

Find the length of a segment in the coordinate plane with endpoints (-1 , 3) and (4 , -5).

Answers

Answer:

9.43

Step-by-step explanation:

For this problem you will use the distance formula.

Bob likes to embarrass his students at a rate of 3 students every 2 days. Bob embarrasses his students at a rate of 5 students every 3 days. together, how many students could these two embarrass in 6 days?

Answers

Answer: 19 students

Step-by-step explanation:

3/2 9/6

5/3 10/6

Answer:

11

Step-by-step explanation:

in 1 day he embarrasses 1 1/2 of his students [ doesnt seem accurate ]

in 2 days he embarrasses 3

in 3 days he embarrasses 5

in 4 days he embarrasses 7

in 5 days he embarrasses 9

in 6 days he embarrasses 11

Help ASAP!!!!!!!!!!!

Answers

Answer:

i think its the third one

Step-by-step explanation:

To answer this question the basic formula require is:
Pii*radius*radius (note: * symbol mean times or multiply)

Steps:

1. 20/2 = 10, we divided because radius is twice of diameter.

2. 10* 2 * pii

Third option is the correct answer.

Marci sells tickets at the swimming pool. The first day, she sold 50 tickets. She keeps records of tickets sold each day. The table below shows her records for the first day.


Marci's Ticket Results
Ticket Type Number of
Tickets Sold
Child, Male 18
Child, Female 15
Adult, Male 5
Adult, Female 12

Based on the information in the table, which is the most reasonable prediction of the number of adult, female tickets Marci will sell out of the next 100 ticket sales?

Answers

24 hope this helps :D

HELP ME PLSSSSSSSSSSSSSSSSSS

Answers

Answer:

12/13

Step-by-step explanation:

Sin is opposite and hypotenuse

48/52 = 12/13

Please i need help on this bad

Answers

Answer: 5361.6514621266 centimeters

Step-by-step explanation:

answer is 2411 13/25

If the first equation is multiplied by 5, by what number would the second equation need to be multiplied to eliminate x by the addition method in the system?
3x+4y=9
-5x-10y=6
(I need help real fast)

Answers

Answer:

i am sorry but i do not no how to do this but if you type it in to the web browser you should gat an answer

Step-by-step explanation:

Yea I agree the web browser should have a quick answer

The line plot below shows the number of juice boxes Sandy drank on specific days. On which dates did Sandy drink the most and the least number of juice boxes?


A.She drank the most on October 12th and the least on October 2nd

B.She drank the most on October 2nd and the least on October 12th

C.She drank the most on October 12th and the least on October 4th

D.She drank the most on October 4th and the least on October 12th

Answers

Answer:

a

Step-by-step explanation:

A should be correct
Sorry if it’s wrong

While training for a marathon, Keith's watch reported how many calories he burned at each mile marker. For 1 mile he burns 117 calories.is the number of calories proportional to the number of miles ? explain

Answers

No it’s is not proportional because for every mile he would have to burn exactly 117 calories and the ratio of the happening is very slim
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