Mathematics Middle School

Which expression is equivalent to (8.4x+2.9)+(−3.7x+5)?

Will give brainliest for the best answer & explanation!

A
−4.7x+7.9

B
4.7x+7.9

C
−12.1x+7.9

D
12.1x+7.9

Answers

Answer 1
the answer would be B. 4.7x+7.9
Answer 2

Step-by-step explanation:

so we know that

(8.4x+2.9)+(−3.7x+5)= 4.7x+7.9

so we need an equivelant to 4.7x+7.9

A. −4.7x+7.9= -1/10x(47x-79)

B.=4.7x+7.9=1/10x(47x+79)

C.−12.1x+7.9=-1/10x(121x-79)

D.12.1x+7.9=1/10x(121x+79)

So the answer would be B!

Hope this Helps!

Related Questions

There’s graphs. Please help!

Answers

Answer:

numbers are still too blury

Step-by-step explanation:

PLZ HELP ME IM VERY CONFUSED! BRAINLIEST TO THE FISRT PERSON WITH WORK! AND 50 POINTS! AND ONLY ANSWER IF YOU HAVE AN ANSWER!!!!!!!!!!

The Hamptons Family has a fish tank holding 10,450 ml of water. The water is leaking at a rate of 270 ml per minute.

Part A: Define the input and output in the given scenario.


Part B: Write a function to model this situation.


Part C: How many liters of water will be left in the tank after 10 minutes
(hint: liters, not milliliters)

Answers

Answer:

The output would depend on the input so relating this to the question, the input is the time (in minute) and the output is the amount of water left in the tank

We can give a letter 't' for the time, the input, and f(t) for the output

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

The original amount of water in the tank is 10450, so this will be the fixed constant.

The amount of water lost per minute is 270 so this will be the term that varies depends on the variable of time, we write this as 270t

The function is given f(t) = 10450 - 270t

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

Given, t = 10

f(10) = 10450 - 270(10)

f(10) = 7750 ml

Step-by-step explanation:

Answer:

 Part A:

Since the rate of 270 ml per minute has units of ml per minute, then yy must have units of ml and x must have units of minutes. The input must then be the number of minutes the tank is leaking for and the output is the number of ml of water remaining in the tank.

Part B:

Since the tank is leaking 270 ml per minute, then after x minutes, 270x ml of water has leaked out of the tank. The tank initially has 10,450 ml of water so after x minutes, there is y=10,450−270x ml remaining in the tank.

Part C:

After x=10 minutes, the amount of water remaining in the tank is y=10,450−270(10)=10,450−2,700=7,750 ml. There are 1,000 ml in 1 liter so 7,750 ml = 7.75 liters. There are then 7.75 liters of water left in the tank after 10 minutes.

HELP PLEASE!!!!!!
Create a situation that could be modeled by the equation f(x) = 2x + 7.

Answers

A situation: A babysitter charges 7 dollars for every kid. She additionally charges 2 for every hour she babysits. How much would she make if she babysat x number of kids?

I need it done assapppp

Answers

In order to find the solution, You would first line line the equation up. then, you would subtract -200 by 15. The answer would be -185. I know the answer will be negative because -200 is too big for 15 to make the solution positive. If you had a positive 201 plus -200 the answer would be equivalent to a positive one because the positive would cancel out the negative.

Included: Negative, positive, equivalent.

explanation/ statement:

"I think I should subtract -200 by 15. which one equal -185. I know the answer will be negative because -200 is too big for 15 to make the solution positive.

In fact, If you had a positive 201 plus -200 the answer would be equivalent to a positive one because the positive would cancel out the negative one.

Hi! I really hope this helps and have a great day/night from you are!

Four siblings have a dog walking business. The table shows the hours worked by each sibling. Each sibling earns $25.50 per hour and the total number of hours worked is represented by 10h+15 , where h represents the number of hours Michael worked.
Martin 2.5h+3
Emilio 4(h−2)
Michael h
Mario 31

Answers

Answer:

Four siblings have a dog walking business. The table shows the hours worked by each sibling. Each sibling earns $25.50 per hour and the total number of hours worked is represented by 10h+15 , where h represents the number of hours Michael worked.

Martin 2.5h+3

Emilio 4(h−2)

Michael h

Mario 31

The algebraic expression is the combination of variable and constants with some mathematical operation between them. The Earning of the four siblings are $357, $244.8, $112.2 and  $790.5 respectively.

What is an Algebraic expression?

An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.

The variable part of an algebraic expression can never be added or subtracted from the constant part.

Given that,

The earning of the siblings per hour is $25.50.

Total number of hours worked is 10h + 15.

As per the problem the value of h can be found by equating the total number of hours to the sum of hours worked by each sibling as given in the table as follows,

2.5h + 3 + 4(h - 2) + h + 31 = 10h + 15

⇒  2.5h + 3 + 4h - 8 + h + 31 = 10h + 15

⇒  7.5h + 26 = 10h + 15

⇒  2.5h = 11

⇒  h = 11 / 2.5

⇒  h = 4.4

Thus, the earning of each sibling can be calculated by substituting h = 4.4 in their working hour and multiplying it by $25.50 as follows,

Earning of Martin is given as,

(2.5 × 4.4 + 3) × $25.50 = $357

Earning of Emilio is given as,

4(4.4 − 2) × $25.50 = $244.8

Earning of Michael is given as,

4.4 × $25.5 = $112.2

Earning of Mario is given as,

31 × $25.50 = $790.5

Hence, the earnings of the four siblings are as Martin :  $357, Emilio : $244.8, Michael : $112.2 and Mario : $790.5.

To learn more about algebraic expression click on,

brainly.com/question/953809

#SPJ2

the cost of building an airplane with 200 seats is about 100$ million if the cost in million of dollars c is proportional to the number of seats what equation can be used to determine the cost , in millions of dollars to bulid an airplane with any number of seats?

Answers

Answer:

i dont remeber the exact answer but with the millions get rid of the 0s to add easier

Step-by-step explanation:

100 seats will be needed n the aircraft.

00:00

Mia agrees to borrow a 3-year loan with 4% simple interest to buy a motorcycle.

Part A
If Mia will pay a total of $444 in interest, how much money did she initially borrow? Enter your answer in the box.

$

00:00

Part B
How much interest would Mia pay if the simple interest rate were 5%? Enter your answer in the box.

$

Answers

Answer:

Part A: She borrowed: 3700

Part B: She would pay 555 in interest.

Step-by-step explanation:

Since, simple interest is,

Where, P is the principal amount,

r is the annual rate of interest,

t is time ( in years ),

Part A :  Here, S.I. = $ 444,

t = 3 years,

r = 4 %,

Thus,

Hence, She borrowed $ 3700.

Part B :

Here, r = 5 %, t = 3 years, P = $ 3,700,

Hence, She would pay $ 555 interest.

5 times 5 another easy one

Answers

Answer:

25

Step-by-step explanation:

25 is another easy one

PLEASE help haha. Please add an explination as well!

Answers

Answer:

2R10

Step-by-step explanation:

2*40 equals 80 but you need to get to 90 so you have 10 remaining.

2R10
2*40 is equal to 80

Can anyone help me?
I'll put all the questions here.

1) Describe the pattern that is being followed: 1, 5, 10, 16 . . .
What are the next two numbers in the sequence?

2) Describe the pattern that is being followed: 1, 3, 7, 15 . . .
What are the next two numbers in the sequence?

3) Describe the pattern that is being followed: 1, 2, 3, 5, 8 . . .
What are the next two numbers in the sequence?

Will mark brainly if you get all of them!!

Answers

It’s moves 1 up every time

Answer:

Step-by-step explanation:

1) 1 +4=5      

      5+(4+1) = 10

     10 +(4+2)=  16......

2)       0+1 = 1

            1+2 = 3

            3+4 = 7

             7+8= 15          

 ADD THE NEXT NUMBER   15+16 = 31

   

3)           0+1 = 1

                1+1=2

               2+1= 3

               3+2 = 5

               5+3= 8                               8+5=13.........

   

You deposit $2000 in a savings account earning 5% simple interest. How long (in years) will it take for the balance of the account to be $3800?

Answers

Answer:

13 years

Step-by-step explanation:

need brainlyest plz

Answer:

18 months or a year and a half

Step-by-step explanation:

If there are 24 boys and 36 girls in a room, fill out all of the possible ratios of boys to
girls that could be made.
There are 24 boys for every 36 girls (24:36 ratio)
There are boys for every girls try
Type in an equivalent ratio of boys and girls

Answers

4:6 is one ratio, 2:3 is another ratio

Answer:

4:6

Step-by-step explanation:

Divide both #s by 2, 4, 6, or 8 and you'll get an equivalent ratio

(I divided by 6)

Plz make me brailiest :))))

What are the like terms in the expression below?
3x + 8 + 3y + 8x

A 8 and 8x C 3x and 8x

B 3x and 3y D 3x, 3y, and 8

Answers

Correct answer:

C) 3x and 8x

Step-by-step explanation:

At first I thought the correct answer was D.

You may Have thought that too but that is not the correct answer.

You see 3x and 8x are both like terms because they both have x

but..

The other 3 does not have a x it has a y

I hope this helps

Let me know

:)

Cell phone cases cost $12 each. Write an equation to find y, the total cost of x number of cases.

Answers

Answer:

y=12x

Step-by-step explanation

Let's assign meaning to the variables

y= the total cost

x=the number of cases purchased

Since y is the total it is going to be our ending value so y=12x

Hope this helps!

y = 12x (that’s it!!)

Shannon scored 36 points on 6 questions on her test. What is the unit rate for one question?

Answers

Answer:

6

Step-by-step explanation:

6 is the answer for this proquestion

Howard can mow 3 lawns in 6 hours. How many lawns can he mow in 24 hours?
Group of answer choices

12

21

6

3

Answers

Answer:

12 lawns in 24 hours

Step-by-step explanation:

I hope that this helps. Have a good day!

12 is the answer !!!!!!!!!!!!!!!!!!!!!!!!

Can someone pease help me understand the problem?

Answers

Answer:

65 + 50 + 80 divided by 3

Step-by-step explanation:

The answer is 142 I think sorry if I’m wrong

First 5 multiples of 6: 6, 12, 18, 24, 30
First 5 multiples of 9: 9, 18, 27, 36, 45
What is the least common multiple (LCM) of 6 and 9?
A. 54
B. 18
C. 27
D. 9

Answers

Answer:

18

Step-by-step explanation:

theyy both go into 18

The least common multiple (LCM) of 6 and 9 is 18. so, the correct answer is B. 18.

To find the least common multiple (LCM) of 6 and 9, we can list their multiples and look for the smallest common multiple.

The first 5 multiples of 6 are

6, 12, 18, 24, 30.

The first 5 multiples of 9 are

9, 18, 27, 36, 45.

From these lists, we can see that the smallest common multiple of 6 and 9 is 18.

Therefore, the correct answer is B. 18.

Learn more about LCM here;

https://brainly.com/question/13066728

#SPJ6

ANSWER MY LAST QUESTION FAST!!!

Answers

Answer:

why :)

Step-by-step explanation:

Have a good day smile big dont let anyone hurt u ur beautiful :)

Answer:

Step-by-step explanation:

where is your last question?

Magdeline wants to know if the number of words on a page in her art book is generally more than the number of words on a page in her science book. She takes a random sample of 25 pages in each book and then calculates the mean, median, and mean absolute deviation for the 25 samples of each book.

Book Mean Median Mean Absolute Deviation
Art 68.7 50 15.4
Science 54.2 55 7.9


She claims that because the mean number of words on each page in the art book is greater than the mean number of words on each page in the science book, the art book has more words per page. Based on the data, is this a valid inference? (10 points)
Group of answer choices

Yes, because the mean is larger in the art book

No, because the mean is larger in the art book

Yes, because there is a lot of variability in the art book data

No, because there is a lot of variability in the art book data

Answers

Answer:

No, because the mean is larger in the art book

Step-by-step explanation:

give me brainliest plz because i answered

What is 7234433443433456 × 45678456783456789 = ? What is the answer to this.

Answers

Answer:

the answer is 3.3045776e+32

Step-by-step explanation:

this equation dosent really make sense..

3.3045776e+32
Google says it

If I mix 2 cans of yellow paint for every 3 cans of blue paint, how much yellow paint is needed with 6 cans of blue paint? (Draw a picture to help)
Group of answer choices

4

6

5

3

Answers

Answer:

4

Step-by-step explanation:

4 cans. These are ratios. One way u can do these like a problems like these, is 6 blues cans divided by 3 blue cans = 2 blue cans. Then multiply 2•2=4 cans

please help me please

Answers

Answer:

hi

Step-by-step explanation:

12345678901234567890

Answer:

9

Step-by-step explanation:

9*420=3780

hope this helps :3

HEYYYYY YOU......I NEED HELP
You and your friends decide to play video games online together on Saturday. This particular game charges a one-time $10 fee to download and $3.50 per hour of play.Write an equation to represent this situation. Specify what each variable represents. .

Answers

Answer:

3.50h+10

Step-by-step explanation:

H is hours

3.50h+10 is the equation

3. Which of the following has the same value of as -10 + -3? Write you
A. -10-3
B. -10 - (-3)
C. -3 + 10
D. -3 + (-10)

I’ll give 20 points!

Answers

Answer:

A and D

Step-by-step explanation:

Hope this helps :)

What is the slope and y-intercept for the following equation 5y-2x=15

Answers

Answer: y=3+2/5x

Step-by-step explanation:

The slope is 2/5 and y intercept is (0,3)

HELPPPPPPP!!!!!!! BRAINILIST TO FIRST PERSON TO ANSWER AND ANSWER CORRECTLY!! :>

Answers

Answer:

135 in

Step-by-step explanation:

Answer:

181.75 in2 (inches squared)

Step-by-step explanation:

Surface area is all the areas of the sides added up. in this case, it would be calculated as follows:

2×8×2.5 = 2 long sides of box = 40

2×6.75×2.5 = 2 short sides of box = 33.75

2×6.75×8 = 2 faces of box = 108

40 + 33.75 + 108 = 181.75

b) You started with $300, and you spent $115 on Jake. You also set aside money to
cover the sales tax on $300. Now it's your turn decide exactly what you will
purchase with the money you have left. You calculated the costs and best prices
for sheets, shoes, dressers, and peaches, but you didn't buy anything yet. Now
it's time to make your purchases. Make a list of the things you will buy and how
much each items cost. Explain your purchasing decisions. (2 points)

Answers

Answer:

Twin Bed – $60.48

Shoes - $20

Dresser, Mirror, Bookshelf - $82.11

Blanket, Clothes, Toys, Diapers - $277

This gives us a total of 439.59

♡ ♡ ♡ Hope this helps! ♡ ♡ ♡

Answer:

Answer:

Twin Bed – $60.48

Shoes - $20

Dresser, Mirror, Bookshelf - $82.11

Blanket, Clothes, Toys, Diapers - $277

This gives us a total of 439.59

Step-by-step explanation:

Help i'll give 100 points! and brainlist luv! xo

Answers

Answer:

Answers to pictures 9,4,11,12 in order

Step-by-step explanation:

9: Is C (pretty sure)

4:D

11:A

12:C

Sorry if some are wrong

HELP PLEASE WITH THIS MATH PLS

Answers

4(-2/3) = -2.666666666667

You should simplify this equation into 4 x ((-2)/ 3).

Answer:

-2.666666666667

simplify this equation into 4 x ((-2)/ 3).

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