Mathematics Middle School

A. Are the expressions 3(m−2) + 2(m−2) and 5(m−2) equivalent expressions?

B. In two or more complete sentences, justify your answer to A.

Answers

Answer 1
The answer is yes. If you solve both expressions it would be 5m-10.
Answer 2

Answer: yes, this is because when you solve the first equation then your answer will be 5(m-2). You do this by distributing 3 to m & 2 (multiply), then you will distribute 2 to m & 2 (also multiply).

Step-by-step explanation:

Related Questions

what is 1+1-1 plssssssssssssssssssssssssssssssss its a test and its impossible to solve

Answers

Answer:

1

Step-by-step explanation:

1+1 =2

and 2-1=1

since the 2 is a bigger no. 1 got the sigh of +

10 < 2x + 4
_
the sign is a greater than

Answers

Answer:

x > 3

Step-by-step explanation:

10 < 2x + 4

- 4         - 4

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

6 < 2x

3 < x, x > 3

hope this helps! :D

Answer: no is not that is grater

Step-by-step explanation: because when a number is next to a variable you multiply and that would be eight and that is not greater than 10

Evaluate the equation.

3w = 96
A. w = 288
B. w = 32
C. w = -32
D. w = -288

Answers

Answer:

b

Step-by-step explanation:

when you bring 3 to the right side its not working so when you divide it (cause you don't want any numb with the w) you get 32 :)

Answer:

B

Step-by-step explanation:

3w=96

W=96/3

W=32

A chemist is using 389 milliliters of a solution of acid and water. If 14.6 of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.

Answers

Answer:

389 - 14.6 = 374.4

Step-by-step explanation:

374.4 milliliters of acid are in there.

389
-14.6
———
374.4


374.4 milliliters

how much water should be added to 5 gallons of 50% acid solution to get a 20% solution?

Answers

Answer:

7.5 gallons

Step-by-step explanation:

2.5/5+x=0.2

This question is based on the concept of solving an  equation. Therefore, 7.5 gallons of water would be added to 5 gallons of 50% acid solution to get a 20% solution.

Given:

5 gallons of 50% acid solution to get a 20% solution.

According to question,

Let  it be x gallons of water should be added to 5 gallons of 50% acid solution to get a 20% solution.

Now, forming the equation, we get,

 0.50 ( 5 )  =  0.20  ( x + 5 )

Simplifying the equation.

We get,

2.5 = 0.2x + 1

1.5 = 0.2 x

x = 7.5

Therefore, 7.5 gallons of water would be added to 5 gallons of 50% acid solution to get a 20% solution.

For more details, please prefer this link:

https://brainly.com/question/21105092

Writing about Graphing a Fraction

Explain how to graph 5

2

on the number line.


A number line going from 0 to 3. There are 2 equals spaces between each number. The number line contains 0, point A is one-half, 1, point B is 1 and one-half, point C is between point B and 2, 2, point D is 2 and one-half, 3.

help

Answers

Answer:

d) 2 1/2

Step-by-step explanation:

if you make 5/2 a mixed number, you get 2 1/2

Simplify:

-30x^9/10x^17

Answers

Answer:

-3/x^8

Step-by-step explanation:

First, we simplify -30/10 which will be -3.

Next, we simplify x^9/x^17 which will be x^-8, since when dividing exponents, you subtract them. Sorry if this sounds confusing, but if this helps you better understand it, then here you go: I mean that y^n/y^z = y^(n-z).

x^-8 = 1/(x^8), and to find our answer, we multiply this by -3 to get an answer of:

-3/x^8

Part B Using the area you found for the base of the tower, what is its approximate volume? Remember to include units in your answer. And the area of the base of the tower is 1,962.5 square feet.​ pls help

Answers

If you are just trying to find the volume of the cylinder shown the answer should be 25pi squared * 20 which is 39269.91 cubic ft. But I’m not quite sure how the number for the base of a tower is incorporated into the equation.

please help me with thissss

Answers

Answer:

a.) The sum of the weights of the two in insects is 0.0031 grams. (0.0031 grams)

b.) The fly is 0.0013 grams heavier than the gnat. (0.0013 grams)

Step-by-step explanation:

2.2 * 10^-3 = 2.2 * 1/1000 which is 2.2/1000.

9 * 10^-4 = 9 * 1/10000 = 9/10000

To add 9/10000 to 2.2/1000 we have to find the common denominator, which will be 10000.

So we do:

2.2/1000 * 10/10 = 22/10000

9/10000 + 22/10000 = 31/10000 = 0.0031.

The sum of the weights of the two in insects is 0.0031 grams.

To find how much heavier the fly is than the gnat we do:

22/10000 - 9/10000 = 13/10000 = 0.0013

The fly is 0.0013 grams heavier than the gnat.

I need halp plz, no incorrect

Answers

Shape: Rectangle
Area: (Length) x (Width)
Perimeter: 2(Length) + 2(Width)
(SHOWED WORK IN PICTURE)
The guy above me I right

One mom has 3 children, and each child attends a different level of school. If the mom plans to pick her children up, what would be her total distance traveled if she starts at the high school, then goes to the elementary school, and finally the middle school? (Write your answer as a decimal rounded to the nearest tenths place). *

Answers

Can you give a picture so I can know how far the schools are
Yeah I need a picture to see the distances

PLZ ANSWER AS SOON AS YOU CAN!!!!!!!!!!!
The tables show the numbers of white and yellow flowers Cara and Hector used in 5 different arrangements.
Cara's Flower Arrangements
White 3 6 9 12 15
Yellow 5 10 15 20 25

Hector's Flower Arrangements
White 4 8 12 16 20
Yellow 6 10 14 18 22

Part A
Are the numbers of white and yellow flowers in Cara's arrangements proportional?
Which equation relates the number of white flowers, w, to the number of yellow flowers, y?
A. Yes; y=35w
B. Yes; y=53w
C. No; y=3w+5w
D. No; y=5+3w
Part B
Are the numbers of white and yellow flowers in Hector's arrangements proportional?
Write an equation to relate the number of white flowers, h, to the number of yellow flowers, e.
A. Yes; e=32h
B. Yes; e=23h
C. No; e=h+2
D. No; e=h−2

Answers

Answer:

Part A - Yes; y=5/3w        Part B - No; e=h+2

Step-by-step explanation:

The tables show the numbers of white and yellow flowers Cara and Hector used in 5 different arrangements.

Cara’s Flower Arrangements            Proportional

White 3 6 9 12 15

Yellow 5 10 15 20 25

Hector’s Flower Arrangements          Not Proportional

White 4 8 12 16 20

Yellow 6 10 14 18 22

Part A

Are the numbers of white and yellow flowers in Cara’s arrangements proportional?

Which equation relates the number of white flowers, w, to the number of yellow flowers, y?

Yes; y=3/5w

Yes; y=5/3w CORRECT ANSWER

No; y=3w+5w

No; y=5+3w

Part B

Are the numbers of white and yellow flowers in Hector’s arrangements proportional?

Which equation relates the number of white flowers, h, to the number of yellow flowers, e?

Yes; e=3/2h

Yes; e=2/3h

No; e=h+2 CORRECT ANSWER

No; e=h−2

They are correct because Part A is 1.666667  thats more than 1 so it cant be the first, and Part B, its the White flowers plus 2 to be Yellow flowers, not -.

A and C I’m pretty sure about, listen to the other person above me!

Identify the pattern rule for this sequence: 1, 4, 2, 8, 6, 24, 22…

Answers

Answer:

Times four then Minus 2

Step-by-step explanation:

1 times 4 is 4 then minus 2 is 2

times four then minus two.

1 x 2 = 4, then 4-2 equals two. then 2x4=8, then 8 minus two equals 6, and so on!

Identify the parts of the expression 4.2m + (8 , 2) - 6

a. What are the terms of the expression?
b. Which term is the product of two factors?
c. Which term is a quotient?
d. Which term is a constant numerical value?

Answers

Answer:

A

Step-by-step explanation:

Please help me find all choices that apply to the question

Answers

Answer:

which question

Step-by-step explanation:

I am feeling nice so whoever answers gets These
1st to answer: Brainliest, thanks, 5* rating
2nd to answer: thanks, 5* rating
3rd to answer: 5* rating
4-10 to answer: thanks

Answers

Answer:

j

Step-by-step explanation:

I was first

What do we need to answer ?

What is 35x 1 ? OMG this is such a hard question!! first one to answer will get a brainliest!!!

Answers

Answer:

its 35

Step-by-step explanation:

351 obviously :) its quite simple lol

Y’all i need help this is due today

Answers

Answer:

A

Step-by-step explanation:

20 x 2 = 40

30 x 2 = 60

the answe is A.
i did this last week

PLZ HELP AS SOON AS POSSIBLE!!!!!!!!! WILL GIVE LIKE, 5 STARS, & BRAINLIEST; THE WHOLE SHEBANG;
Part 1
Meg is a veterinarian. She found that 5 or, 50% of the dogs she saw this week were boxers. Steve is also a veterinarian. He found that 50% out of the 2 dogs he saw this week were boxers. Does each person need to find the​ part, the​ whole, or the​ percent?
Question content area bottom
Part 1
Meg needs to find the
▼
percent.
part.
whole.
Part 2
Steve needs to find the
▼
percent.
part.
whole.

Answers

Answer:

a. Meg needs to find the part

b. Steve needs to find the percent.

Step-by-step explanation:

A. Does Meg need to find the part, the whole, or the percent.

Meg already knows the whole and the percent.

The whole is the entire number of dogs seen: 16 dogs.

The percent is 50%.

Hence, she needs to find the part: this is how many (what part) of the 16 dogs she saw were boxers.

And she can do with a simple operation:

Part = whole × percent = 16 × 50% = 8. This is 8 dogs of 16 were boxers.

B. Does Steve need to find the part, the whole, or the percent.

He already knows the part (7 of the 35 dogs were boxers) and the whole (35 dogs).

Then he needs to find the percent, which he can do using the next operation:

Percent = (part / whole) × 100 = (7/35)×100 = 20%

Step-by-step explanation:

Part 1:

Meg needs to find the whole as 50% of the dogs = 5 therefore 100% equals 10 dogs.

Part 2:

Steve saw 50% out of two dogs meaning that he only saw 1 dog that is a boxer.

When mom is doing cleaning on her own it takes 2 hours. When dad does cleaning, it takes 4 hours. How long will it take if both of them work together?

Answers

2 hours because mom will just kick dad out since he’s not helping much
It will take them 8 hours

You make 12 equal payments for a go-kart. You pay a total of $1380. How much is each payment? The quotient is ______. So, each payment is ___________.

answer plz

Answers

Answer:

115; 115

Step-by-step explanation:

In this case, 1380 is the dividend, 12 is the divider, and the answer is the quotient. Thus we get the quotient, or each payment, is 1380/12=115

Each payment is 115 1380/12

What does -3 ⅕ < 1 ⅗ indicate about the positions of -3 ⅕ and 1 ⅗ on a number line? Rewrite the statement using absolute value. Use the number line below to help.

Answers

the answer is a

i did the quiz

100% sure that it is A like the other person said

Madeline is scuba diving at an elevation of −71.8 feet when his friend signals to come higher. Madeline makes three ascents, each an equal distance, to reach an elevation of −15.7 feet, where her friend is located.

What was Madeline's elevation after her first ascent?

Enter your answer as a decimal

Answers

Answer:

I believe its 112.26?

Step-by-step explanation:

Yes it is 112.26 I hope this really does help

So i picked b because it looked like the correct one? can someone tell me if it is

Answers

Yeah you are correct
B is the corect answer

720x + 10 = 2170
What is x?

Answers

Answer:

x = 3

Step-by-step explanation:

720x + 10 = 2170

=> 720x = 2160

=> x = 3

Hoped this helped.

Answer:

x = 3

Step-by-step explanation:

First subtract 10 from 2,170 to get 2,160.

Next isolate the x variable by dividing 720 on both sides to get x = 3.

Hope this helps you :)

help is very much needed thxs

Answers

Answer:

Step-by-step explanation:

An arts academy requires there to be 4 teachers for every 76 students and 3 tutors for every 27 students. How many students does the academy have per​ teacher? Per​ tutor? How many tutors does the academy need if it has 54 students​?

Answers

Answer:

The answer is 19 students per tescher

Step-by-step explanation:

76 ÷ 4 =19

Per teacher there would be 19 students.
76 divided by 4 = 19

Per Tutor there would be 9 students
27 divided by 3 = 9

Hope this helped

HELP ME PLZZZZ. I don’t know!!

Answers

Answer:

w=-6

Step-by-step explanation:

-2(-6)>-4

12>-4

This is true.

w=2 it’s the last one just divide -2 under -4

Simplify the expression. Drag and drop a number into each box to complete the simplification.


8 × (30 ÷ 15)2 + 3 = 8 × (___)2 + 3

= 8 × ___ + 3

=____ + 3

=____


numbers to drag and drop: 51, 32, 38, 4, 35, 2

Answers

Answer:

8 × (30 ÷ 15)2 + 3 = 8 × (2)2 + 3

= 8 × 4 + 3

=32 + 3

=35

Step-by-step explanation:

Answer: 35

Step-by-step explanation: Mark brainiiest please

Given that the function graphed is ƒ(x), what is ƒ(−5)?

I will give the best answer brainliest!

Answers

Answer:

D. 5

Step-by-step explanation:

yeah-ya............. right?

The correct answer is is answer choice D
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