Mathematics Middle School

the table shows, step-by-step, how to simplify the algebraic expression 3 (x- 5) + 4x. Justify step 4.
A) Multiply
B) Commutative property
C) Combine like terms
D) Associative Property

The Table Shows, Step-by-step, How To Simplify The Algebraic Expression 3 (x- 5) + 4x. Justify Step 4.A)

Answers

Answer 1

Answer: C , combine like terms

Step-by-step explanation:

Related Questions


-2x <-12

solve the inequality

Answers

Answer:

x > 6

Step-by-step explanation:

-2x < -12

divide by -2

switch signs because you're dividing by a negative number

-2x/-2 < -12/-2

x > 6

Hope this helps :)

Answer:

x > 6

Step-by-step explanation:

Solve -2x <-12 for x.  Your answer must be a set of real numbers.

Divide both sides by -2.  Note that if we here divide by a negative number, we must reverse the direction of the inequality symbol:

-2x < - 12

-----   ------

 -2      -2

This becomes x > 6, "the solution set"

Raman purchased 2 an 1/2 pounds of chocolate covered peanuts for $9.75. WHat was the price per pound

Answers

Answer:

$3.9 per pound

Step-by-step explanation:

Hope this helps!

Read the passage about Ötzi the Iceman.

Half an hour after Ötzi dined, the killer came along and shot him in the back from a distance of almost 100 feet. The arrow went under his left armpit . . . a wound that would have been quickly fatal and probably not treatable even in modern times, especially where it happened. By the angle of the wound, he was either shot from below and behind, or he had been bent forward when he was hit from above and behind.

–"Who Killed the Iceman? Clues Emerge in a Very Cold Case,” Rod Nordland

Whose viewpoint is represented in the passage?

the killer’s
the Iceman’s
a historian’s
an eyewitness’s

Answers

A Historian because they are describing what they see years later
A historian is the answer to your question

Simplify each expression involving signed numbers.


-7 – 2 =
12 + (-4) =
-8(-6) =

18/-3=

Answers

Answer:

-5 , 8 , 48 , -6

Step-by-step explanation:

-7- -2 = -5

This complies with the rule that 2 negatives make a positive.

12 + (-4) = 8

You just ignore the brackets.

-8(-6) = 48

The -8 next to the bracket with no symbol means you need to multiply, and again 2 negatives make a positive.

18/-3 = -6

As the 18 is not negative, but -3 is, the answer is also a negative because one negative and one positive make a negative!

Hope this helps and have a good day!

-5 8 48 and -6

hope I helped

Guys this might seem annoying because I just added a question few mins ago but I got home only about 5 to 10 mins ago and I have to go to bed soon and I gotta finish my hw
Sorry, here is my question 20 points for it I’m kinda low on them too so small amounts of points, I’ll make up for it tomorrow thanks so much :’)

Answers

So looking at this from my bed, as a bored 11 year old, 2,910 is the rounded version of 2,912. Not to make you do work or anything but 2,910 divided by 95!

Answer:

Step-by-step explanation:

Here’s a way To solve :D

if she biked 95 each day, we just find how many days it’ll take.

2912/95=30.65 or 31 days if you want to use 31 I advise you to use 30.65

even though this seems improper, if you multiply 30.65 by 95 you’ll still get 2912

hope this helped :3

what is the answer 4.3 x .8

Answers

Answer:

The answer is 3.44

Step-by-step explanation:

4.3 × 0.8 = 3.44

The answer is 3.44

-TheUnknownScientist 72

Answer:

3.44

Step-by-step explanation:

There are 32 more pupils in the Robotics Club than in the Art Club. The number of pupils in the Robotics Club is 18 less than 3 times the number of pupils in the Art Club. How many pupils are there in the Robotics Club?

Answers

78 pupils,
32r =18
R=3a-18
R= 3(32)-18
R=96-18

Mr. Calloway has a rectangular yard that is 120 feet wide and 80 feet deep. To keep his dogs on his property, he needs to build a fence. How much fencing does he need?


A. 200 ft
B. 36 ft
C. 400 ft
D. 480 ft

Answers

Answer:

C. 400 ft

Step-by-step explanation:

120 + 120 = 240. I do this to find the length sides of perimeterI can say that the depth, 80, is also the width. So, 80 + 80 = 160160 + 240 = 400. I do this to find the perimeterTherefore, 400 is the answer.
200 aka A is the answer

Identifying Errors on a Number Line Find the product using the number line. 3(-6) = A number line going from negative 7 to positive 3. An arrow goes from negative 6 to negative 4, from negative 4 to negative 2, and from negative 2 to 0. What error(s) are shown here? Select three options. The arrows should be a length of 2. The arrows should be a length of 6. The arrows should be pointing in the positive direction. The arrows should start at zero. The arrows should point in the negative direction.

Answers

Answer:

the answer is every option besides the first one

Step-by-step explanation:

hoped that helped

Answer:

B - The arrows should be length of 6.

D - The arrows should start at zero.

E - The arrows should point in the negative direction

Step-by-step explanation:

5. There are 450 students attending High Desert Middle School. This year 34% of the students walk to school. Explain how you can use proportional reasoning to calculate the number of students that walk to school.​

Answers

Ok so look get a piece of paper write down the percent is it going up or down we don’t know that but since it’s nothing like clothes you use that but think. Of your problem as like if you went to a store and so clothes were 34 percent off you going to get the original percent and then your doing 450\x ok now I go over 34%\100 it’s always going to be one hundred but since we’re talking about something else here’s your answer your just gonna say the ratio in this problem and your going to use that calculator call Dezmos use the scientific one and it will give you the answer if put 450 then 34%
If you put 34% over 100 multiply 34 and 450 then you will have 15,300. Then divide 15,300 and 100.

ANSWER: 153

help me please thank you

Answers

Answer:

The person above me is right

Step-by-step explanation:

Yes

It is independent also the one I have is a good one

1/7 of ___ is 1/35
help me plz :)

Answers

Answer:1/5

Explanation: 1/35 divided by 1/7= 1/5. 1/7 of/x 1/5= 1/35.

The value of unknown number would be equal to  1/5

How can we interpret the division?

When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.

We need to find the unknown number.

A negative divided by a negative is positive, then;

1/7 of x  is 1/35

1/35 divided by 1/7

1/7 of x 1/5 = 1/35.

x = 1/5

Therefore, The value is x = 1/5

Learn more about division here:

brainly.com/question/26411682

#SPJ2

!!please help me quick!!
find the equation of the line.
y=__x+__

Answers

Y= 3x + 3. Use rise (how many it goes up or down) and divide it by run (how many it goes left or right) that number is your slope (aka M/ the number that goes with x. The number without the x attached is just where the line crosses the y axis
Y=3x+3 use rise over run and the y intercept is y

Which sentence is incorrect?
A. -4 > -7
B. 5/2=2.5
C. -2.5<-3
D. - 2/5 = -0.4

Answers

Answer: D

Step-by-step explanation: D is the incorrect

Help ..
Sandy works at a clothing store. She makes $8 per hour plus earns 10% commission on her sales. She worked 70 hours over the last two weeks and had a total of $1,612 in sales before taxes.

Which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?
A.
$721
B.
$560
C.
$161
D.
$217

Answers

Answer:

A

Step-by-step explanation:

First, I'm going to work out the hourly wages for the 2 weeks.

$8 x 70hours = $560

(8 x 7 = 56 x 10 = 560)

Next, work out the commision.

10% of $1612

1612 ÷ 10 = 161.2

Finally, add together both the hourly wages and commision.

161.2 + 560 = 721.2

Round it down to a whole number.

721 , Add on the dollar sign.

It's answer A, $721.

A. 721
I’m pretty sure it’s 721$

If the perimeter of this polygon is 83 meters, what is the length of the missing side?


A. 24 m
B. 34 m
C. 59 m
D. 83 m

Answers

The answer is 34 m because if you add all of it together you get 34 m
B. 34m
Hope this helps!

help meeeeeeeeee 5 buck plz

Answers

i hope this helps :)

i never learned fractions… plz help

Answers

Answer:

3/10 ÷ (-4/5) = 3/8 and then for the bottom one is -1 7/8 and for the one in the right is 6 2/5

The first picture will be 3/8 and second picture will be 7

Hi, I need some help with the last question of the first problem and the answer to the second page.

Answers

Answer:

46.9 for the first one

Step-by-step explanation:

So sorry if i'm wrong <3

What is not an example of potential energy?

Question 3 options:

A stretched rubber band


A ball sitting high on a shelf


A pendulum at the top of its swing when it briefly stops


A car accelerating down a hill

Answers

Answer:

a car accelerating down a hill

Step-by-step explanation:

because if an object is moving at a speed, then it has kinetic energy because its moving, not potential energy. potential energy is strored energy meaning that it has the potential to move.

A car accelerating down a hill

Solve for x.

25(x−12)=−234 will name you the brainllest fastest answer

Answers

Answer:

2.64

Step-by-step explanation:

looked it up

Answer:

66/25 or 2.64

Step-by-step explanation:

times 25 and x to get 25x and then 25 and 12 to get -300, put it togather as an equation to get 25x-300= -234. Next move postive 300 to -234 do the math and get 66=25x. last divied 66 and 25 to get 2.64 or in a fraction 66/25

What is the perimeter of the polygon shown below?


A. 59 m
B. 62 m
C. 73 m
D. 83 m

Answers

C because if you add them all together

Answer:

C Trust me

Step-by-step explanation:

Mark as brainliest if correct

do anyone know
x+2=-14-x

Answers

Answer:

x=-8

Step-by-step explanation:

Answer:

x = - 8

Step-by-step explanation:

x + 2 = - 14 - x

x + x = - 14 - 2

2x = - 16

x = - 16/2

Pls Help I will give Brainliest!!!!!

Answers

Slope is defined as rise/run. Specifically, ((y2 - y1)/x2 - x1))- To define slope, we read the graph from right to left. Pick two points on the graph. I’ll pick the following two points:

(-2,13) and (0,5)

Applying the above formula will get you ((13-5)/(-2-0)) = 8/-2= -4
-4 is the slope

The y-intercept is the y-value where the line crosses the y axis. In this function, the y-intercept is 5.

The slope intercept form can be written in the form: y = mx + b where m is the slope and b is the y-intercept. Therefore, substitution of the values we’ve got will give us the following answer:

y = -4x + 5
Yea what he or she said

PLEASE HELP The ratio of athletes in the two teams is 3:2. After 12 athletes move from first team to second, the ratio is 5:4. Find the number of athletes on each team originally.

Answers

Answer:

You can use the method of substitution and elimination.

Team A : Team B

        3x : 2x

       -12   +12

        5y : 4y

3x-12=5y ---> (1)

2x+12=4y ---> (2)

12x-48=20y

10x+60=20y

12x-48=10x+60

12x-10x=48+60

           = 108

2x=108

x=54

Original number of athletes on Team A = 3(54)

                                                                  = 162

Original number of athletes on Team B = 2(54)

                                                                    = 108

3,6,9,12= 4
2,4,6,8,10,12= 6

So it is 4 and 6

A rectangular scarf measures 5 1/3 inches by 49 1/2 inches. What is the distance around the scarf?

Answers

Answer:

109 2/3 inches

Step-by-step explanation:

Add each side twice.

5 1/3 + 5 1/3 = 10 2/3

49 1/2 + 49 1/2 = 99

Add them together

109 2/3 inches

what is [tex]rs^{3}[/tex] divided by 8-2r if r=8 and s=3?

Answers

ok done. Thank to me :>

-27 hope that helps :))))

in the addition problem on the right, each letter stands for a digit and different letters stand for different digits. What digits do the letters H,E, and A each represent?
H E
H E
H E
+ H E
____________
A E

Answers

Answer:

This problem is easy but I'll demonstrate an approach for simplifying these kind of problems that can be applied to problems of higher complexity.

Key: Notice that you can write AH as 10A + H and HEE as 100H + 10E+E, and thus

AH +A = HEE

10A + H + A = 100H + 10E +E

11A + H = 100H + 11E

11A = 99H + 11E

A = 9H + E

As H can not be 0 (it is the leading digit in HEE), A must be at least and therefore exactly 9 and the problem solves itself from there on.

Step-by-step explanation:

PLEAS HELP

Item 5
A scuba diver descends in the water at a rate of 2312 feet per minute for 2.6 minutes. He immediately changes course when he sees a large fish and ascends at a rate of 28 feet per minute for 2 minutes.

What is the scuba diver's position relative to sea level after the 4.6 minutes?

Enter your answer as a decimal in the box.

ft

Answers

2312 FPM for 2.6 minutes

2312 x 2.6 = 6011.2

28 FPM for 2 minutes

28 x 2 = 56

6011.2 descend

55 ascend

0-6011.2 = -6011.2

ans + 56 = -5955.2

:)

What is the approximate area of the circle, in square centimeters? Use 3,14 for π. Record your answers on grid. Then fill in your bubbles. Show your work.

Answers

Answer:

either 62.8 or 31.4

Step-by-step explanation:

you multiply 3.14 by the radius or the middle line i dont remeber what its called. but you would multpliy them

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